2018

  1. Ahnen, M. L., Ansoldi, S., Antonelli, L. A., Arcaro, C., Babić, A., Banerjee, B., Bangale, P., Barresde Almeida, U., Barrio, J. A., BecerraGonzález, J., and 269 coauthors, "Extreme HBL behavior of Markarian 501 during 2012", (2018), A&A, 620, A181.

  2. Słowikowska, A., Krzeszowski, K., Żejmo, M., Blinov, D. & Reig, P., "Optical linear polarization of helium-rich white dwarfs samplewith the RoboPol polarimeter", (2018), MNRAS, 479, 5312.

  3. Reig, P. & Blinov, D., "Warped disks during type II outbursts in Be/X-ray binaries: evidence from optical polarimetry", (2018), A&A, 619, A19.

  4. Angelakis, E., Kiehlmann, S., Myserlis, I., Blinov, D., Eggen, J., Itoh, R., Marchili, N. & Zensus, J. A., "Optical polarisation variability of radio-loud narrow-line Seyfert 1 galaxies. Search for long rotations of the polarisation plane", (2018), A&A, 618, A92.

  5. Skalidis, R., Panopoulou, G. V., Tassis, K., Pavlidou, V., Blinov, D., Komis, I. & Liodakis, I., "Local measurements of the mean interstellar polarization at high Galactic latitudes", (2018), A&A, 616, A52.

  6. Ibryamov, S., Semkov, E., Peneva, S. & Karadeniz, U. \u . {g . }ur ., "Multicolor photometric behavior of the young stellar object V1704 Cygni", (2018), Bulgarian Astronomical Journal, 29, 10.

  7. Reig, P. & Zezas, A., "Discovery of X-ray pulsations in the Be/X-ray binary IGR J06074+2205", (2018), A&A, 613, A52.

  8. Pittori, C., Lucarelli, F., Verrecchia, F., Raiteri, C. M., Villata, M., Vittorini, V., Tavani, M., Puccetti, S., Perri, M., Donnarumma, I., and 27 coathours, "The Bright γ-ray Flare of 3C 279 in 2015 June: AGILE Detection and Multifrequency Follow-up Observations", (2018), ApJ, 856, 99.

  9. Ibryamov, S. I., Semkov, E. H. & Peneva, S. P., "V2492 Cygni: Optical BVRI Variability During the Period 2010-2017", (2018), Publications of the Astronomical Society of Australia, 35, e007.

  10. Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Liodakis, I., Panopoulou, G. V., Angelakis, E., Baloković, M., Hovatta, T., King, O. G., Kus, A., Kylafis, N., Mahabal, A., Maharana, S., Myserlis, I., Paleologou, E., Papamastorakis, I., Pazderski, E., Pearson, T. J., Ramaprakash, A., Readhead, A. C. S., Reig, P., Tassis, K. & Zensus, J. A., "RoboPol: connection between optical polarization plane rotations and gamma-ray flares in blazars", (2018), MNRAS, 474, 1296.

  11. Słowikowska, A.; Krzeszowski, K.; Żejmo, M.; Blinov, D.; Reig, P., "Optical polarimetry studies of white dwarfs", (2018), CoSka..48..245.

2017

  1. Raiteri, C. M.; Nicastro, F.; Stamerra, A.; Villata, M.; Larionov, V. M.; Blinov, D.; Acosta-Pulido, J. A.; Arévalo, M. J.; Arkharov, A. A.; Bachev, R.; and 52 coauthors "Synchrotron emission from the blazar PG 1553+113. An analysis of its flux and polarization variability", 2017, MNRAS, 466, 3762

  2. Liodakis, I.; Blinov, D.; Papadakis, I.; Pavlidou, V., "Estimating the distribution of rest-frame time-scales for blazar jets: a statistical approach", 2017, MNRAS, 465, 4783

  3. Semkov, Evgeni H.; Peneva, Stoyanka P.; Ibryamov, Sunay I., "Photometric and spectroscopic study of the new FUor star V2493 Cyg", 2017, BlgAJ, 26, 57

  4. Żejmo, Michał; Słowikowska, Aga; Krzeszowski, Krzysztof; Reig, Pablo; Blinov, Dmitry, "Optical linear polarization of 74 white dwarfs with the RoboPol polarimeter", 2017, MNRAS,464, 1294

  5. Reig, P.; Blay, P.; Blinov, D., "The optical counterpart to the Be/X-ray binary SAX J2239.3+6116", 2017, A&A, 598, A16

  6. Itumeleng M. Monageng, Vanessa A. McBride, Malcolm J. Coe, Iain A. Steele, Pablo Reig, "On the relationship between circumstellar disc size and X-ray outbursts in Be/X-ray binaries", 2017, MNRAS, 464, 572

  7. Nasiroglu, Ilham; Goździewski, Krzysztof; Słowikowska, Aga; Krzeszowski, Krzysztof; Żejmo, Michał; Zola, Staszek; Er, Huseyin; Ogłoza, Waldemar; Dróżdż, Marek; Koziel-Wierzbowska, Dorota; Debski, Bartlomiej; Karaman, Nazli, "Is There a Circumbinary Planet around NSVS 14256825?", 2017, AJ, 153, 137

  8. Bąkowska, K.; Olech, A.; Pospieszyński, R.; Świerczyński, E.; Martinelli, F.; Rutkowski, A.; Koff, R.; Drozd, K.; Butkiewicz-Bąk, M.; Kankiewicz, P., "MN Draconis: a peculiar, active dwarf nova in the period gap", 2017, A&A, 603A, 72

  9. Semkov, Evgeni H.; Ibryamov, Sunay I.; Peneva, Stoyanka P., "A deep decrease event in the brightness of the PMS star V350 Cep", 2017, BlgAJ, 27, 75

  10. Gaur, Haritma; Gupta, Alok; Bachev, Rumen; Strigachev, Anton; Semkov, Evgeni; Wiita, Paul; Gu, Minfeng; Ibryamov, Sunay "Multi-Band Intra-Night Optical Variability of BL Lacertae", 2017, Galax, 5, 94

  11. Kiehlmann, S.; Blinov, D.; Pearson, T. J.; Liodakis, I., "Optical EVPA rotations in blazars: testing a stochastic variability model with RoboPol data", 2017, MNRAS, 472, 3589

  12. M.I. Carnerero, C.M. Raiteri, M. Villata, J.A. Acosta-Pulido, V.M. Larionov, P.S. Smith, F. D'Ammando for the GASP-WEBT collaboration "Dissecting the long-term emission behaviour of the BL Lac object Mrk 421", 2017, MNRAS, 472, 3789

  13. Makoto Uemura, Ryosuke Itoh, Ioannis Liodakis, Dmitry Blinov, Masanori Nakayama, Longyin Xu, Naoko Sawada, Hsiang-Yun Wu, Issei Fujishiro, "Optical polarization variations in the blazar PKS 1749+096", 2017, PASJ, 69, 96

2016

  1. Panopoulou, G. V.; Psaradaki, I.; Tassis, K. "The magnetic field and dust filaments in the Polaris Flare", 2016, MNRAS, 462, 1517

  2. Larionov, V. M.; Villata, M.; Raiteri, C. M., et al, "Exceptional outburst of the blazar CTA 102 in 2012: the GASP-WEBT campaign and its extension", 2016, MNRAS, 461, 3047

  3. Fuhrmann, L.; Angelakis, E.; Zensus, J. A., et al., "The F-GAMMA program: Multi-frequency study of Active Galactic Nuclei in the Fermi era. Program description and the first 2.5 years of monitoring", 2016, A&A, 596 A45

  4. Angelakis, E.; Hovata, T.; Blinov, D., et al., "RoboPol: the optical polarization of gamma-ray-loud and gamma-ray-quiet blazars", 2016, MNRAS, 463, 3365

  5. Blinov, D.; Pavlidou, V.; Papadakis, I., et al., "RoboPol: Do optical polarization rotations occur in all blazars?" 2016, MNRAS, 462, 2011

  6. Gupta, Alok C.; Agarwal, A.; Bhagwan, J.; Strigachev, A.; Bachev, R.; Semkov, E.; Gaur, H.; Damljanovic, G.; Vince, O.; Wiita, Paul J., "Multiband optical variability of three TeV blazars on diverse time-scales", 2016, MNRAS, 458, 1127

  7. Reig, P. Milonaki, F., "Accretion regimes in the X-ray pulsar 4U 1901+03", 2016, A&A, 594, A45

  8. Reig, P.; Nersesian, A.; Zezas, A., Gkouvelis, L.; Coe, M. J., "Long-term optical variability of high-mass X-ray binaries. II. Spectroscopy", 2016, A&A, 590, A122

  9. Blinov, D.; Pavlidou, V.; Papadakis, I. E. et al., "RoboPol: optical polarization-plane rotations and flaring activity in blazars", 2016, MNRAS, 457, 2252

  10. Schmitt, J. H. M. M.; Kanbach, G.; Rau, A., and H. Steinle, "Optical microflaring on the nearby flare star binary UV Ceti", 2016, A&A, 589, A48

  11. Ibryamov, Sunay I.; Semkov, Evgeni H., "Photometric variability of 14 PMS stars in the NGC 7000/IC 5070 complex", 2016, BlgAJ, 24, 62I

2015

  1. Agarwal, Aditi, Gupta, Alok C., Bachev, R., Strigachev, A., Semkov, E., Wiita, Paul J., Böttcher, M., Boeva, S.; Gaur, H., Gu, M.F., Peneva, S., Ibryamov, S., "Multiband optical-NIR variability of blazars on diverse time-scales", 2015, MNRAS, 451, 3882

  2. Akras, S., Boumis, P., Meaburn, J., Alikakos, J., López, J. A., Gonçalves, D. R., "Evidence for a [WR] or WEL-type binary nucleus in the bipolar planetary nebula Vy 1-2", 2015, MNRAS, 451, 3882

  3. Blinov, D., Pavlidou, V., Papadakis, I., Kiehlmann, S., Panopoulou, G., Liodakis, I., King, O. G., Angelakis, E., Baloković, M., Das, H., and 19 coauthors, "RoboPol: first season rotations of optical polarization plane in blazars", 2015, MNRAS, 453, 1669

  4. Furniss, A. et al., "First NuSTAR Observations of Mrk 501 within a Radio to TeV Multi-Instrument Campaign", 2015, ApJ, 812, 65

  5. Gaur, H. et al., "Optical and radio variability of BL Lacertae", 2015, A&A, 582, 103

  6. Gaur, H. et al., "Nature of intranight optical variability of BL Lacertae", 2015, MNRAS, 452, 4263

  7. Goździewski, K., Słowikowska, A., Dimitrov, D., Krzeszowski, K., Żejmo, M., Kanbach, G., Burwitz, V., Rau, A., Irawati, P., Richichi, A., Gawroński, M., Nowak, G., Nasiroglu, I., Kubicki, D., "The HU Aqr planetary system hypothesis revisited",   2015, MNRAS, 448, 1118

  8. Ibryamov, S. Semkov, E., Peneva, S., "Long-term BVRI light curves of 5 pre-main sequence stars in the field of "Gulf of Mexico"",   2015, Bulgarian Astronomical Journal, Vol. 22, p. 3

  9. Ibryamov, S. Semkov, E., Peneva, S., "Long-Term Multicolour Photometry of the Young Stellar Objects FHO 26, FHO 27, FHO 28, FHO 29, and V1929 Cygni",   2015, Publications of the Astronomical Society of Australia, Volume 32, e011 doi:10.1017/pasa.2015.21

  10. Raiteri, C.M. et al. ,"The WEBT campaign on the BL Lac object PG 1553+113 in 2013. An analysis of the enigmatic synchrotron emission", 2015, MNRAS, 454, 353

  11. Reig, P., Fabregat, J.,"Long-term variability of high-mass X-ray binaries. I. Photometry", 2015, A&A, 574A, 33

  12. Panopoulou, G., Tassis, K., Blinov, D., Pavlidou, V., King, O. G., Paleologou, E., Ramaprakash, A., Angelakis, E., Baloković, M., Das, H. K., and 19 coauthors, "Optical polarization map of the Polaris Flare with RoboPol", 2015, MNRAS, 452, 715

  13. Semkov, E.H. et al.,"The Unusual Photometric Variability of the PMS Star GM Cep", 2015, Publications of the Astronomical Society of Australia, Volume 32, e011 doi:10.1017/pasa.2015.11.

  14. Semkov, E.H., Peneva, S.P., Ibryamov, S.I.,"The pre-main-sequence star V1184 Tauri (CB 34V) at the end of prolonged eclipse", 2015, A&A, 582, 113

  15. Shafter, A. W. et al.,"Recurrent Novae in M31", 2015, ApJ Supp, 216, 34

  16. Vučetić, M. M., Arbutina, B., Urošević, D., "Optical supernova remnants in nearby galaxies and their influence on star formation rates derived from Halpha emission",   2015, MNRAS, 446, 943

2014

  1. Aleksic, J., Ansoldi, S., Antonelli, L. A., Antoranz, P., Babic, A., Bangale, P., Barrio, J. A., Becerra González, J., Bednarek, W., Bernardini, E., and 139 coauthors, "MAGIC search for VHE gamma-ray emission from AE Aquarii in a multiwavelength context", 2014, A&A, 568, 109

  2. Bachev, R., Strigachev, A., Semkov, E., Boeva, S., Peneva, S., Ibryamov, S., Stoyanov, K., Spassov, B., Tsvetkova, S., Mihov, B., and 2 coauthors, "Photometric reverberation mapping of Markarian 279", 2014, Bulgarian Astronomical Journal, Vol. 20, p. 26

  3. Gaidos, E., Anderson, D. R., Lépine, S., Colón, K. D., Maravelias, G., Narita, N., Chang, E., Beyer, J., Fukui, A., Armstrong, J. D., and 5 coauthors, "Trawling for transits in a sea of noise: a search for exoplanets by analysis of WASP optical light curves and follow-up (SEAWOLF)",   2014, MNRAS, 437, 3133

  4. Gaur, Haritma, "Optical Spectral Variability of Blazars", 2014, Journal of Astrophysics and Astronomy, Volume 35, Issue 3, pp.241-245

  5. Ibryamov, S. Semkov, E., Peneva, S., "A long-term UBVRI photometric study of the pre-main sequence star V350 Cep", 2014, Research in Astronomy and Astrophysics, Volume 14, Issue 10, article id. 1264-1268

  6. King, O. G., Blinov, D., Giannios, D., Papadakis, I., Angelakis, E., Balokovic, M., Fuhrmann, L., Hovatta, T., Khodade, P., Kiehlmann, S., and 16 coauthors, "Early-time polarized optical light curve of GRB 131030A",   2014, MNRAS, 445, L114

  7. King, O. G., Blinov, D., Ramaprakash, A. N., Myserlis, I., Angelakis, E., Balokovic, M., Feiler, R., Fuhrmann, L., Hovatta, T., Khodade, P., and 19 coauthors, "The RoboPol pipeline and control system",  2014, MNRAS, 442 1706

  8. Pavlidou, V., Angelakis, E., Myserlis, I., Blinov, D., King, O. G., Papadakis, I., Tassis, K., Hovatta, T., Pazderska, B., Paleologou, E., and 16 coauthors, "The RoboPol optical polarization survey of gamma-ray-loud blazars",   2014, MNRAS, 442, 1693

  9. Poljancic, Beljan I., Jurdana-Sepic, R., Semkov, E. H., Ibryamov, S., Peneva, S. P., Tsvetkov, M. K., "Long-term photometric observations of pre-main sequence objects in the field of North America/Pelican Nebula", 2014, A&A, 568, 49

  10. Reig, P. & Zezas, A., "Discovery of X-ray pulsations in the Be/X-ray binary IGR J21343+4738" 2014, MNRAS, 442, 472

  11. Reig, P., Zezas, A., "Disc-loss episode in the Be shell optical counterpart to the high-mass X-ray binary IGR J21343+4738", 2014, A&A, 561, A13

  12. Reig, P. , Blinov, D., Papadakis, I., Kylafis, N., Tassis, K., "The high optical polarization in the Be/X-ray binary EXO 2030+375", 2014, MNRAS, 445, 4235

  13. Reig, P., Doroshenko, V., Zezas, A., "The quiescent state of the accreting X-ray pulsar SAX J2103.5+4545", 2014, MNRAS, 445, 1314

  14. Semkov, Evgeni H., Peneva, Stoyanka P., Ibryamov, Sunay I., Dimitrov, Dinko P., "The unusual photometric behavior of the new FUor star V2493 Cyg (HBC 722)",   2014, Bulgarian Astronomical Journal, Vol. 20, p.59

2013

  1. Kapanadze, Bidzina Z., "Catalog and Statistical Study of X-Ray Selected BL Lacertae Objects",   2013, AJ, 145, 189

  2. Leonidaki, I., Boumis, P., Zezas, A., "A multiwavelength study of supernova remnants in six nearby galaxies - II. New optically selected supernova remnants",   2013, MNRAS, 429, 189

  3. Semkov, E. H., Peneva, S. P., Munari, U., Dennefeld, M., Mito, H., Dimitrov, D. P., Ibryamov, S., Stoyanov, K. A., "Photometric and spectroscopic variability of the FUor star V582 Aurigae", 2013, A&A, 556, 60

  4. Raiteri, C. M., Villata, M., D'Ammando, F., Larionov, V. M., Gurwell, M. A., Mirzaqulov, D. O., Smith, P. S., Acosta-Pulido, J. A., Agudo, I., Arévalo, M. J., and 68 coauthors, "The awakening of BL Lacertae: observations by Fermi, Swift and the GASP-WEBT", 2013, MNRAS, 436, 1530

  5. Zaninoni, E., Bernardini, M.G., Margutti, R., Oates, S., Chincarini, G., "Gamma-ray burst optical light-curve zoo: comparison with X-ray observations",   2013, A&A, 557, 12 

2012

  1. Bachelet, E., et al., "A brown dwarf orbiting an M-dwarf: MOA 2009-BLG-411L", 2012, A&A, 547, 55

  2. Gaur, H., Gupta, A., C., Strigachev, A., Bachev, R., Semkov, E., Wiita, P. J., Peneva, S., Boeva, S., Slavcheva-Mihova, L., Mihov, B., Latev, G., Pandey, U. S., "Optical flux and spectral variability of Blazars", 2012, MNRAS, 425, 3002

  3. Galan, C., et al., "International observational campaigns of the last two eclipses in EE Cephei: 2003 and 2008/9", 2012, MNRAS, 424, 2626

  4. Semkov, E., Peneva, S. P., Munari, U., Tsvetkov, M. K., Jurdana-Sepic, R., de Miguel, E., Schwartz, R. D., Dimitrov, D. P., Kjurkchieva, D. P., Radeva, V. S. "Optical photometric and spectral study of the new FU Orionis object V2493 Cygni (HBC 722)" 2012, A&A, 542, 43

  5. Gaur, H., Gupta, A.C., Strigachev, A., Bachev, R., Semkov, E., Wiita, P. J., Peneva, S., Boeva, S., Kacharov, N., Mihov, B., Ovcharov, E., "Quasi-simultaneous two-band optical variability of the blazars 1ES 1959+650 and 1ES 2344+514", 2012, MNRAS, 420, 3147

  6. Gozdziewski, K., Nasiroglu, I., Slowikowska, A., Beuermann, K., Kanbach, G., Gauza, B., Maciejewski, A.J., Schwarz, R., Schwope, A. D., Hinse, T. C., Haghighipour, N., Burwitz, V., Slonina, M., Rau, A., "On the HU Aquarii planetary system hypothesis", 2012, MNRAS, (in press)

  7. Liakos, A., Niarchos, P., Budding, E., "A fresh insight on the evolutionary status and third body hypothesis of the eclipsing binaries AD And, AL Cam and V338 Her", 2012, A&A, 539, 129

  8. Liakos, A., Niarchos, P., Soydugan, E., Zasche, P., "Survey for δ Sct components in eclipsing binaries and new correlations between pulsation frequency and fundamental stellar characteristics", 2012, MNRAS, 422, 1250

  9. Liakos, A., Niarchos, P., "A new photometric and spectroscopic study of the eclipsing binaries CC Her and CM Lac: Physical parameters and evolutionary status", 2012, Ap&SS, Volume 340, Issue 2, pp.281-289

  10. Maravelias, G., Kardasis, E., Strikis, I.-M., Georgalas, B., Koutoulaki, M.. "Report From the epsilon Aurigae Campaign in Greece", 2012, The Journal of the American Association of Variable Star Observers, vol. 40, no. 2, p. 679

  11. Nasiroglu, I., Słowikowska, A., Kanbach, G., Haberl, F., "Very fast photometric and X-ray observations of the intermediate polar V2069 Cygni (RX J2123.7+4217)", 2012, MNRAS, 420, 3350

  12. Nespoli, E., Reig, P., & Zezas, A., "New insights into the Be/X-ray binary system MXB 0656-072", 2012, A&A, 547, A103

  13. Rossi, A., et al. "A deep search for the host galaxies of gamma-ray bursts with no detected optical afterglow", 2012, A&A, 545, 77

  14. Semkov, E. H., Peneva, S. P. "Optical photometry of GM Cep: evidence for UXor type of variability", 2012, Ap&SS, 338, 95

2011 

  1. Bitsakis, T., Charmandaris, V., da Cunha, E., Díaz-Santos, T., Le Floc'h, E., Magdis, G., "A mid-IR study of Hickson compact groups. II. Multiwavelength analysis of the complete GALEX-Spitzer sample", 2011, A&A, 533, 142

  2. Ksanfomality, L. V., "Study of the unknown hemisphere of mercury by ground-based astronomical facilities", 2011, SoSyR, 45, 281

  3. Lampens, P., Strigachev, A., Kim, S.-L., et al., "Multi-site, multi-year monitoring of the oscillating Algol-type eclipsing binary CT Herculis", 2011, A&A, 534, 111

  4. Liakos, A., Bonfini, P., Niarchos, P., Hatzidimitriou, D., "Photometry and spectroscopy of the newly discovered eclipsing binary GSC 4589-2999", 2011, Astronomische Nachrichten, Vol.332, Issue 6, p.602

  5. Semkov, Evgeni & Peneva, Stoyanka, "The new FUor star HBC 722 - one year after the outburst", 2011, BlgAJ, 17, 88

  6. Reig, P., "Be/X-ray binaries", 2011, Ap&SS, 332, 1

2010

  1. Fouqué, P.,et al., “OGLE 2008-BLG-290: an accurate measurement of the limb darkening of a galactic bulge K Giant spatially resolved by microlensing”, 2010, A&A, 518, 51

  2. Günther, H. M. et al., “The absence of sub-minute periodicity in classical T Tauri stars”, 2010, A&A, 518, 54

  3. Meusinger, H., Henze, M., Birkle, K., Pietsch, W., Williams, B., Hatzidimitriou, D., Nesci, R., Mandel, H., Ertel, S., Hinze, A., Berthold, T., "J004457+4123 (Sharov 21): not a remarkable nova in M 31 but a background quasar with a spectacular UV flare", 2010, A&A, 512, 1

  4. Peneva, S.P., Semkov, E.H., Munari, U., Birkle, K., "A long-term photometric study of the FU Orionis star V 733 Cephei", 2010, A&A, 515, 24

  5. Pietsch, W., "X-ray emission from optical novae in M 31", 2010, Astronomische Nachrichten, Vol.331, Issue 2, p.187

  6. Reig, P., Zezas, A., Gouvelis, L., "The optical counterpart to IGR J06074+2205: a Be/X-ray binary showing disc loss and V/R variability", 2010, A&A, 522, 107

  7. Reig, P., Slowikoska, A., Zezas, A., Blay, P., "Correlated optical/X-ray variability in the high-mass X-ray binary SAX J2103.5+4545", 2010, MNRAS, 401, 55

  8. Semkov, E.H., Peneva, S.P., Munari, U., Milani, A., Valisa, P., "The large amplitude outburst of the young star HBC 722 in NGC 7000/IC 5070, a new FU Orionis candidate", 2010, A&A, 523, 3

  9. Uytterhoeven, K. et al., "Ground-based follow-up in relation to Kepler asteroseismic investigation", 2010, Astronomische Nachrichten, Vol.331, Issue 9/10, p.993

2009

  1. Anderhub, H. et al., "Correlated X-Ray and Very High Energy Emission in the Gamma-Ray Binary LS I +61 303", 2009, ApJ, 706, 27

  2. Bonfini, P., Hatzidimitriou, D., Pietsch, W., Reig, P., "Spectroscopy of the bright optical counterparts of X-ray sources in the direction of M 31", 2009, A&A, 507, 705

  3. Boumis, P., Meaburn, J., Lloyd, M., Akras, S., "A long trail behind the planetary nebula HFG1 (PK 136+05) and its pre-cataclysmic binary central star V664 Cas", 2009, MNRAS, 396, 1186

  4. Boumis, P., Xilouris, E. M., Alikakos, J., Christopoulou, P. E., Mavromatakis, F., Katsiyannis, A. C., Goudis, C. D., "Discovery of optical emission from the supernova remnant G 32.8-0.1 (Kes 78)", 2009, A&A, 499, 789

  5. Gandhi, P., “The Flux-Dependent rms Variability of X-Ray Binaries in the Optical”, 2009, ApJ Letters, 697, 167

  6. Mavromatakis, F., Boumis, P., Meaburn, J., Caulet, A., “A new candidate supernova remnant G 70.5+1.9”, 2009, A&A, 503, 129

  7. Papadaki, C., Boffin, H.M.J., Stanishev, V., Boumis, P. Akras, S., Sterken, C., "Photometric study of selected cataclysmic variables II. Time-series photometry of nine systems", 2009, JAD, 15, 1

  8. Peneva, S. P., Semkov, E. H., Stavrev, K. Y., "Photometric study of the FUor star V 1735 Cyg (Elias 1-12)", 2009, Ap&,SS, 323, 329

  9. Schwarz, R., Schwope, A.D., Vogel, J., Dhillon, V.S., Marsh, T.R., Copperwheat, C., Littlefair, S.P., Kanbach, G., "Hunting high and low: XMM monitoring of the eclipsing polar HU Aquarii", 2009, A&A, 496, 833

2008

  1. Bachev, R., Strigachev, A., Semkov, E., Mihov, B., "Spectroscopy of bright quasars: emission lines and internal extinction", 2008, A&A, 488, 977

  2. Boumis, P., Alikakos, J., Christopoulou, P. E., Mavromatakis, F., Xilouris, E. M., Goudis, C. D., “First optical detection of the supernova remnant G 15.1-1.6”, 2008, A&A, 481, 705

  3. Ksanfomality, L. V., "The surface of Mercury from ground-based astronomical observations" 2008, SoSyR, 42, 451

  4. Mihov, B. Bachev, R., Slavcheva-Mihova, L., Strigachev, A., Semkov, E., Petrov, G., “Photometric monitoring of the blazar 3C 345 for the period 1996-2006”, 2008, Astronomische Nachrichten, 329, 77

  5. Peneva, Stoianka P. & Semkov, Evgeni H., "Photometric monitoring of FUORs and EXORs" 2008, BlgAJ, 10, 29

  6. Raiteri, C. M., “A new activity phase of the blazar 3C 454.3. Multifrequency observations by the WEBT and XMM-Newton in 2007-2008”, 2008, A&A, 491, 755

  7. Semkov, E. H., Tsvetkov, M.K., Borisova, A.P., Stavrev, K.Y., Kroll, P., Berthold, T., Birkle, K., Mandel, H., Mito, H., Tarusawa, K., "A long-term photometric study of V 1184 Tauri" 2008, A&A, 483, 537

  8. Stefanescu, A., Kanbach, G., Słowikowska, A., Greiner, J., McBreen, S., Sala, G., “Very fast optical flaring from a possible new Galactic magnetar”, 2008, Nature, 455, 503

2007

  1. Boumis, P., Meaburn, J., Alikakos, J., Redman, M.P., Akras, S., Mavromatakis, F., López, J.A., Caulet, A., Goudis, C.D., “Deep optical observations of the interaction of the SS 433 microquasar jet with the W50 radio continuum shell”, 2007, MNRAS, 381, 308

  2. Hatzidimitriou, D., Reig, P., Manousakis, A., Pietsch, W., Burwitz, V., Papamastorakis, I., "M31N 2005-09c: a fast Fe II nova in the disk of M31", 2007, A&A, 464, 1075

  3. Howarth, I.D., et al. "Towards an understanding of the Of?p star HD 191612: optical spectroscopy", 2007, MNRAS, 381, 433

  4. Mavromatakis, F., Xilouris, E.M., Boumis, P., "The optical properties of the G89.0+4.7 (HB 21) supernova remnant", 2007, A&A, 461, 991

  5. Papadakis, I. E., Villata, M., Raiteri, C. M., “The long-term optical spectral variability of BL Lacertae”, 2007, A&A, 470, 857

  6. Raiteri, C. M., “WEBT and XMM-Newton observations of 3C 454.3 during the post-outburst phase. Detection of the little and big blue bumps”, 2007, A&A, 473, 819

  7. Reig, P., Larionov, V., Negueruela, I., Arkharov, A.A., Kudryavtseva, N.A., "The Be/X-ray transient 4U 0115+63/V635 Cassiopeiae. III. Quasi-cyclic variability", 2007, A&A, 462, 281

  8. Smith, R., Vaughan, S., "X-ray and optical variability of Seyfert 1 galaxies as observed with XMM-Newton", 2007, MNRAS, 375, 1479

2006

  1. Blay, P., Negueruela, I., Reig P., Coe, M.J., Corbet, R.H.D., Fabregat, J., Tarasov, A.E., "Multiwavelength monitoring of BD +53°2790, the optical counterpart to 4U 2206+54", 2006, A&A, 446, 1095

  2. Boumis, P., Meaburn, J., Redman, M. P., Mavromatakis, F., "A deep mosaic of [O III]5007 Å CCD images of the environment of the LBV star P Cygni", 2006, A&A, 457, 1

  3. Boumis, P., Akras, S., Xilouris, E.M., Mavromatakis, F., Kapakos, E., Papamastorakis, J., Goudis, C.D., "New planetary nebulae in the Galactic bulge region with l > 0°- II", 2006, MNRAS, 367, 1551

  4. Coe, M.J., Reig, P., McBride, V.A., Galache, J.L., Fabregat, J., "A 0535+26: back in business", 2006, MNRAS, 368, 447

  5. Georgantopoulos, I., Nandra, K., Brotherton, M., Georgakakis, A., Papadakis, I.E., O'Neill, P., "XMM-Newton and Chandra observations of SHEEP sources", 2006, MNRAS, 367, 1727

  6. Hatzidimitriou, D., Pietsch, W., Misanovic, Z., Reig, P., Haberl, F., "Spectroscopy of the brightest optical counterparts of X-ray sources in the direction of M31 and M33", 2006, A&A, 451, 835

  7. Ksanfomality, L. V., "Earth-based optical imaging of Mercury" 2006, AdSpR, 38, 594

  8. Nordhagen, S., Herbst, W., Williams, E.C., Semkov, E., "The Recurrent Eclipse of an Unusual Pre-Main-Sequence Star in IC 348", 2006, ApJ, 646, 2

  9. Papadaki, C., Boffin, H.M.J., Sterken, C., Stanishev, V., Cuypers, J., Boumis, P., Akras, S., and Alikakos, J., "Photometric study of selected cataclysmic variables", 2006, A&A, 456, 599

  10. Patsis, P. A. & Xilouris, E. M., "Boxy/peanut `bulges': comparing the structure of galaxies with the underlying families of periodic orbits" 2006, MNRAS, 366, 1121

  11. Raiteri, C., et al., "Multifrequency variability of the blazar AO 0235+164. The WEBT campaign in 2004-2005 and long-term SED analysis", 2006, A&A, 459, 731

  12. Semkov, E.H., "Photometric and spectroscopic variability of the pre-main sequence star V 1184 Tauri (CB 34V)", 2006, AN, 327, 4, 328

  13. Xilouris, E.M., Papadakis, I.E, Boumis, P., Dapergolas, A., Alikakos, J., Papamastorakis, J., Smith, N., Goudis, C.D., "B and I-band optical micro-variability observations of the BL Lac objects S5 2007+777 and 3C 371", 2006, A&A, 448, 143

2005

  1. Bachev, R., Strigachev, A., Semkov, E., "Short-term optical variability of high-redshift quasi-stellar objects", 2006, MNRAS, 358, 774

  2. Boumis, P., Mavromatakis, F., Xilouris, E. M., Alikakos, J., Redman, M. P., Goudis, C.D., "Deep optical observations of the supernova remnants G 126.2+1.6, G 59.8+1.2 and G 54.4-0.3", 2005, A&A 443, 175

  3. Böttcher, M., et al., "Coordinated Multiwavelength Observation of 3C 66A during the WEBT Campaign of 2003-2004", 2005, ApJ, 631, 169

  4. Mavromatakis, F., Boumis, P., Xilouris, E., Papamastorakis, J., Alikakos, J., "The faint supernova remnant G116.5+1.1 and the detection of a new candidate remnant", 2005, A&A , 435, 141

  5. Meaburn, J., Boumis, P., López, J.A., Harman, D.J., Bryce, M., Redman, M.P., Mavromatakis, F., "The creation of the Helix planetary nebula (NGC 7293) by multiple events", 2005, MNRAS, 360, 963

  6. Mikolajewski, M., et al., "Preliminary Photometric Results for the 2003 Eclipse of EE CEP", 2005, Ap&SS, 296, 445

  7. Ksanformality, L., Papamastorakis, G., Thomas, N., "The Planet Mercury: Synthesis of resolved images of unknown part in the longitude range 250-290 degrees W", 2005, Planetary and Space Science, 53, 849

  8. Ksanfomality, L. V., "Resolved Images of an Unknown Sector on the Surface of Mercury" 2005, AstL, 31, 767

  9. Raiteri, C.M., et al., " The WEBT campaign to observe AO 0235+16 in the 2003-2004 observing season. Results from radio-to-optical monitoring and XMM-Newton observations", 2005, A&A, 438, 39

  10. Sciare, J., Oikonomou, K., Cachier, H., Mihalopoulos, N., Andreae, M. O., Maenhaut, W., & Sarda-Estève, R., "Aerosol mass closure and reconstruction of the light scattering coefficient over the Eastern Mediterranean Sea during the MINOS campaign" 2005, ACP, 5, 2253S

  11. Reig, P., Negueruela, I., Papamastorakis, G., Manousakis, A., Kougentakis, T., "Identification of the optical counterparts of high-mass X-ray binaries through optical photometry and spectroscopy", 2005, A&A, 440, 637

  12. Reig, P., Negueruela, I., Fabregat, J., Chato, R., Coe, M.J., "Long-term optical/IR variability of the Be/X-ray binary LS V +44 17/RX J0440.9+4431", 2005, A&A, 440, 1079

  13. Sciare, J., Oikonomou, K., Cachier, H., Mihalopoulos, N., Andreae, M. O., Maenhaut, W., & Sarda-Estève, "Aerosol mass closure and reconstruction of the light scattering coefficient over the Eastern Mediterranean Sea during the MINOS", 2005, ACPD, 5, 2427

  14. Sciare, J., Oikonomou, K., Cachier, H., Mihalopoulos, N., Andreae, M. O., Maenhaut, W., & Sarda-Estève, R., "Aerosol mass closure and reconstruction of the light scattering coefficient over the Eastern Mediterranean Sea during the MINOS campaign", 2005, ACP, 5, 2253

  15. van Cauteren, P., Lampens, P., Robertson, C. W., & Strigachev, A., "Search for intrinsic variable stars in three open clusters: NGC 1664, NGC 6811, NGC 7209", 2005, CoAst, 146, 21

  16. Wilson, C.A., Weisskopf, M. C., Finger, M. H., Coe, M. J., Greiner, J., Reig P., Papamastorakis, G., "Discovery of a Be/X-ray Binary Consistent with the Position of GRO J2058+42", 2005, ApJ, 622, 1024

2004

  1. Bachev, R. & Strigachev, A., "Optical continuum variability of the active galaxy Mrk 279 - implications for different accretion regimes", 2004, AN, 325, 317

  2. Boumis, P., Meaburn, J., Lopez, J.A., Mavromatakis, F., Redman, M.P., Harman, D.J., Goudis, C.D., "The kinematics of the bi-lobal supernova remnant G 65.3+5.7 - Paper II", 2004, A&A, 424, 583

  3. Georgantopoulos, I., Papadakis, I., Zezas, A., & Ward, M. J., "X-Ray Luminous Galaxies. II. Chandra and XMM-Newton Observations of the ``Composite'' Galaxy IRAS 20051-1117" 2004, ApJ, 614, 634

  4. Hatzidimitriou, D., Antoniou, V., Papadakis, I., Kaltsa, M., Papadaki, C., Papamastorakis, I., & Croke, B. F. W., "BVRI photometry of the galactic globular cluster NGC 6779", 2004, MNRAS, 348, 1157

  5. Mavromatakis, F., Aschenbach, B., Boumis, P., Papamastorakis, J., "Multi-wavelength study of the G82.2+5.3 supernova remnant", 2004, A&A, 415, 1051

  6. Mavromatakis, F., Xilouris, E., Boumis, P., "The supernova remnant G6.4-0.1 and its environment", 2004, A&A, 426, 567

  7. Mavromatakis, F., Papamastorakis, J., Ventura, J., & Boumis, P., "Optical supernova remnant observations from Skinakas Observatory", 2004, AdSpR, 33, 480"

  8. Meaburn, J., Boumis, P., Redman, M.P. Lopez, J.A., Mavromatakis, F., "Candidates for giant lobes projecting from the LBV stars P Cygni and R 143", 2004, A&A, 422, 603

  9. Nandra, K., Georgantopoulos, I., Brotherton, M., Papadakis, I.E., "X-ray and optical counterparts of hard X- ray selected sources from the SHEEP survey, first results", 2004, MNRAS,, 347, 41

  10. Reig, P., Negueruela, I., Fabregat, J., Chato, R., Blay, P., Mavromatakis, F., "Discovery of the optical counterpart to the X-ray pulsar SAX J2103.5+4545", 2004, A&,A, 421, 673

  11. Papadakis, I.E., Samaritakis, V., Boumis, P., Papamastorakis, J., "Multi-band optical micro-variability observations of the BL Lac object S4 0954+658", 2004, A&A, 426, 437

  12. Semkov, E. H., "A new dep minimum in the light curve of the PMS star V1184 Tauri (CB34V)", 2004, A&A, 419, 59

  13. Strigachev, A., Lampens, P., "Multicolor CCD measurements of nearby visual double stars. II", 2004, A&A, 422, p.1023

  14. Walborn, Nolan R. et al., "A Period and a Prediction for the Of?p Spectrum Alternator HD 191612", 2004, ApJ, 617, 61

  15. Villata, M., et al, "The WEBT BL Lacertae Campaign 2001 and its extension, Optical light curves and colour analysis 1994-2002", 2004, A&A, 421, 103

  16. Villata, M., et al, "The WEBT campaigns on BL Lacertae. Time and cross-correlation analysis of optical and radio light curves 1968-2003", 2004, A&A, 424, 497

2003

  1. Boettcher, M., et al., "Coordinated Multiwavelength Observations of BL Lacertae in 2000", 2003, ApJ, 596, 847

  2. Boller, Th., Voges, W., Dennefeld, M., Lehmann, I., Predehl, P., Burwitz, V., Perlman, E., Gallo, L., Papadakis, I.E., Anderson, S., "1ES 1927+654: Persistent and rapid X-ray variability in an AGN with low intrinsic neutral X-ray absorption and narrow optical emission lines", 2003, A&A, 397, 557

  3. Boumis, P., Paleologou, E.V., Mavromatakis, F., Papamastorakis, J., "New Planetary Nebulae in the Galactic Bulge Region with l>00-I. Discovery method and first results", 2003, MNRAS, 339, 735

  4. Ksanfomality, L. V., "Solar System Research", 2003, SoSyR, 37, 469

  5. Malzac, J.; Belloni, T., Spruit, H.C., Kanbach, G., "The optical and X-ray flickering of XTE J1118+480", 2003, A&A, 407, 335

  6. Mavromatakis, F., "Deep optical observations of the supernova remnant G78.2+2.1", 2003, A&A, 408, 237

  7. Mavromatakis, F., "Optical line emission from the supernova remnant G 73.9+0.9", 2003, A&A, 398, 153

  8. Mavromatakis, F., Boumis, P., Goudis, C.D., "The faint supernova remnant G 34.7-0.4 (W44)", 2003, A&A, 405, 591

  9. Nakos, Th., Ofek, E.O., Boumis, P., Cuypers, J., Sinachopoulos, D., van Dessel, E., Gal-Yam, A., Papamastorakis, J., "A catalog of secondary photometric standard stars around gravitational lenses", 2003, A&A, 402, 1157

  10. Papadakis, I.E., Boumis, P., Samaritakis, V., Papamastorakis, J., "Multi-band optical micro-variablility observations of BL Lacertae", 2003, A&A, 397,565

  11. Raiteri, C.M., et al., "Optical and radio behaviour of the BL Lacertae object 0716+714*", 2003, A&A, 402, 151

  12. Reig, P., Ribo, M., Paredes, J.M., Marti, J., "Long- Term X- Ray variability of the microquasar system LS 5039/RX J1826.2-1450", 2003, A&A, 405, 285

  13. Sciare, J., Cachier, H., Oikonomou, K., Ausset, P., Sarda-Estève, R., & Mihalopoulos, N., "Characterization of carbonaceous aerosols during the MINOS campaign in Crete, July-August 2001: a multi-analytical approach", 2003, ACPD, 3, 3373

  14. Semkov E. H., "Photometric and spectroscopic study of V 1184 Tauri", 2003, A&A, 404, 655

2002

  1. Boumis, P., Mavromatakis, F., Paleologou, E., "First optical light from the supernova remnant G 17.4-2.3", 2002, A&A, 385, 1042

  2. Boumis, P., Mavromatakis, F., Paleologou, E.V., Becker, W., "New optical filamentary structures in Pegasus", 2002, A&A, 396, 225

  3. Hynes, R.I., et al, "Spectroscopic observations of the candidate sgB[e]/X-ray binary CI Camelopardalis", 2002, A&A, 392, 991

  4. Mavromatakis, F., Boumis, P., Paleologou, E., "Optical observations of the supernova remnant G 69.4+ 1.2", 2002, A&A, 387, 635

  5. Mavromatakis, F., Boumis, P., Paleologou, E., "Imaging and spectroscopy of the faint remnant G 114.3+0.3", 2002, A&A, 383, 1011

  6. Mavromatakis, F., Boumis, P., Papamastorakis, J., Ventura, J., "Deep optical observations of G 65.3+5.7", 2002, A&A, 388, 355

  7. Mavromatakis, F., Strom, R.G., "A new candidate supernova remnant in Cygnus", 2002, A&A, 382, 291

  8. Spruit, H.C., Kanbach, G., "Correlated X-ray and optical variability in KV UMa", 2002, A&A, 391, 225

  9. Villata, M., et al, "The WEBT BL Lacertae Campaign 2000", 2002, A&A, 390, 407

2001

  1. Clark, J.S., Reig, P., Goodwin, S.P., Larionov, V.M., Blay, P., Coe, M.J., Fabregat, J., Negueruela, I., Papadakis, I, Steele, I.A., "On the radio emitting high mass X-ray binary LS 5039", 2001, A&A, 376, 476

  2. Kanbach, G., Straubmeier, C., Spruit, H.C., Belloni, T., "Correlated fast X-ray and optical variability in the black hole candidate XTE J1118+480", 2001, Nature, 414, 180

  3. Lampens, P., Strigachev, A., "Multicolor observations of nearby visual double stars, "New CCD measurements and orbits", 2001, A&A, 368, 572

  4. Mavromatakis, F., Papamastorakis, J., Paleologou, E.V., "The physical structure of the planetary nebula NGC 6781", 2001, A&A, 374, 280

  5. Mavromatakis, F., Papamastorakis, J., Ventura, J., Becker, W., Paleologou, E.V., Schaudel, D., "The supernova remnants G 67.7+1.8, G 31.5-0.6 and G 49.2-0.7", 2001, A&A, 370, 265

  6. Mavromatakis, F., Ventura, J., Paleologou, E.V., Papamastorakis, J., "The peculiar supernova remnant CTB 80", 2001, A&A, 371, 300

  7. Miroshnichenko, A.S., Fabregat, J.J., Bjorkman, K.S., Knauth, D.C., Morrison, N.D., Tarasov, A.E., Reig, P., Negueruela, I., Blay, P., "Spectroscopic observations of the δ Scorpii binary during its recent periastron passage", 2001, A&A, 377, 485

  8. Misiriotis, A., Popescu, C.C., Tuffs, R., Kylafis, N.D., "Modeling the spectral energy distribution of galaxies", 2001, A&A, 372, 775

  9. Shemmer, O., et al. "Multiwavelength monitoring of the narrow line Seyfert 1 galaxy AKN 564. III. Optical observations and the optical-UV-X-Ray connection", 2001, ApJ, 561, 162

  10. Sinachopoulos, D., Nakos, Th., Boumis, P., van Dessel, E., Burger, M., Rodriguez-Gil, P., "Photometric variability of the gravitational lens 0142-100 (UM 673)", 2001, AJ, 122, 1692

  11. Straubmeier, C., Kanbach, G., & Schrey, F., "OPTIMA: A Photon Counting High-Speed Photometer" 2001, ExA, 11, 157

2000

  1. Alton, P.B., Rand, R.J., Xilouris, E.M., Bevan, S., Ferguson, A.M., Davies J.I., Bianchi, S., "Dust outflows from quiescent spiral disks", 2000, A&A Supl. Ser, 145, 83

  2. Doyle, L.R., et al. "Observational limits on terrestrial-sized inner planets around the CM Draconis system using the photometric transit method with a matched - filter algorithm", 2000, AJ, 535, 338

  3. Mavromatakis, F., Papamastorakis, J., Paleologou, E.V., Ventura, J., "Optical CCD imaging of the supernova remnant CTA 1.", 2000, A&A, 353, 371

  4. Negueruela, I., Reig, P., Clark, J.S., "The nature of 1WGA J1958.2+3232: A new intermediate polar", 2000, A&A, 354, 29

  5. Papadakis, I., Hatzidimitriou, D., Croke, B.F.W., Papamastorakis, J., "The NGC 6426 RR Lyrae varables and horizontal-branch morphology", 2000, A&A, 119, 851

  6. Popescu, C.C., Misiriotis, A., Kylafis, N.D., Tuffs, R.J., Fischera, J., "Modeling the spectral energy distribution of galaxies", 2000, A&A, 362, 138

  7. Reig, P., Negueruela, I., Coe, M.J., Fabregat, J., Tasov, A.E., Zamanov, R.K., "Correlated V/R and infrared photometric variations in the Be/X-ray binary LS I+610", 2000, MNRAS, 317, 205

  8. Roy, M., Papadakis, I., Ramos-Colon, E., Sambruna, R., Tsinganos, K., Papamastorakis, J., Kafatos, M., "The recent high state of the BL LACERTAE object AO 0235 and cross-correlation between otical and radio bands", 2000, AJ, 545, 758

  9. Szegoe, K., et al., "Physics of Mass Loaded Plasmas", 2000, Space Science Reviews, 94, 429

1993-1999

  1. Hatzidimitriou, D., Papadakis, I., Croke, B.F.W., Papamastorakis, J., Paleologou, E.V., Xanthopoulos, E., Haerendel, G., "The age of NGC6426, a metal-poor globular cluster in the galactic halo", 1999, A&A 117, 3059

  2. Xilouris, E.M., Byun, Y.I., Kylafis, N.D., Paleologou, E.V., Papamastorakis, J., "Are spiral galaxies optically thin or thick?", 1999, A&A, 344, 868

  3. Bianchi, S., Alton, P.B., Davies, J.I., "SCUBA imaging of the NGC 7331 dust ring", 1998, MNRAS, 298, 49

  4. Xilouris, E.M., Alton, P.B., Davies, J.I., Kylafis, N.D., Papamastorakis, J., Trewhella, M., "Optical and NIR modelling of NGC 891", 1998, A&A, 331, 894

  5. Megeath, S.T., Wilson, T.L., "The NGC 281 west cluster. I. Star formation in photoevaporating clumps.", 1997, AJ, 114, 1106

  6. Fischer, Ch. Th., Haerendel, G., Bogdanov, A.T., "Dynamics of Structures in the Plasma Tail of Comet Hale-Bopp", 1997, Earth, Moon and Planets 77, 279

  7. Xilouris, E.M., Kylafis, N.D., Papamastorakis, J., Paleologou, E.V., Haerendel, G., "The distribution of stars and dust in spiral galaxies: the edge-on spiral UGC 2048", 1997, A&A, 325, 135

  8. Xilouris, K.M., Papamastorakis, J., Paleologou, E., Terzian, Y., "The shaping of aging planetary nebulae", 1996, A&A, 310, 603

  9. Xilouris, K.M., Papamastorakis, J., Sokolov, N., Paleologou, E., Reich, W., "Discovery of the new emission nebula G4.4+6.4", 1994, A&A, 290, 639

  10. Papamastorakis, J., Xilouris, K.M., Paleologou, E.V., "Morphological study of the extended halo around the Dumbbell Nebula (NGC 6853)", 1993, A&A, 279, 536

  11. Xilouris, K.M., Papamastorakis, J.,Paleologou, E.V., Andredakis, Y., Haerendel, G., "Detection of optical emission in the area of G127.1+0.5", 1993, A&A, 270, 393