Optical and X-ray variability of the Seyfert galaxies NGC 5548, NGC 7469, NGC 3227, NGC 4051, NGC 4151, Mrk 509, Mrk 79, Akn 564 and quasar 1E 0754
| Chesnok, NG, Sergeev, SG, 1Vavilova, IB 1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine |
| Kinemat. fiz. nebesnyh tel (Online) 2009, 25(2):150-160 |
| Language: Russian |
| Keywords: quasar, Seyfert galaxy, X-ray variability |