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By Pronik I.   Metik L.  

Astronomical and Astrophysical Transactions, Vol. 23, Iss. 6, 2004-12 ,pp. : 509-524

Taylor & Francis Ltd

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Night-to-night variability of the emission lines in the spectrum of the Seyfert galaxy NGC 3227 nucleus

By Metik L.   Pronik I.   Sharipova L.  

Astrophysics, Vol. 49, Iss. 4, 2006-10 ,pp. : 427-436

Springer Publishing Company

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Twelve years of X-ray and optical variability in the Seyfert galaxy NGC 4051

By Breedt E.   McHardy I. M.   Arévalo P.   Uttley P.   Sergeev S. G.   Minezaki T.   Yoshii Y.   Sakata Y.   Lira P.   Chesnok N. G.  

Monthly Notices of the Royal Astronomical Society, Vol. 403, Iss. 2, 2010-04 ,pp. : 605-619

Oxford University Press

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X-ray and optical variability of the seyfert galaxy NGC 7469

By Doroshenko V.   Sergeev S.   Vovk E.   Efimov Yu.   Klimanov S.   Nazarov S.  

Astronomy Letters, Vol. 36, Iss. 9, 2010-09 ,pp. : 611-633

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Studying the long-time variability of the Seyfert 2 galaxy NGC 4388 with

By Fedorova E. V.   Beckmann V.   Neronov A.   Soldi S.  

Monthly Notices of the Royal Astronomical Society, Vol. 417, Iss. 2, 2011-10 ,pp. : 1140-1147

Oxford University Press

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