The effects of seeing on spectral line measurements in Seyfert 1 galaxiesPETERSON, B. M; COLLINS, G. W. II.The Astrophysical journal. 1983, Vol 270, Num 1, pp 71-78, issn 0004-637XArticle

The Seyfert 1 Galaxy Ark 120 in 1996-2005 : UBVRI PhotometryDOROSHENKO, V. T; SERGEEV, S. G; PRONIK, V. I et al.Astronomy reports. 2008, Vol 52, Num 3, pp 167-183, issn 1063-7729, 17 p.Article

The optical luminosity function of Seyfert 1 nucleiCHENG FU-ZHEN; DANESE, L; DE ZOTTI, G et al.Monthly Notices of the Royal Astronomical Society. 1985, Vol 212, Num 4, pp 857-871, issn 0035-8711Article

The Seyfert 1 Galaxy Ark 120. Spectral Variability in 1992-2005DOROSHENKO, V. T; SERGEEV, S. G; PRONIK, V. I et al.Astronomy reports. 2008, Vol 52, Num 6, pp 442-462, issn 1063-7729, 21 p.Article

Some implications of excess soft X-ray emission from Seyfert 1 galaxiesFABIAN, A. C; GUILBERT, P. W; ARNAUD, K. A et al.Monthly Notices of the Royal Astronomical Society. 1986, Vol 218, Num 3, pp 457-464, issn 0035-8711Article

Variations of the Seyfert galaxy Fairall 9GLASS, I. S.Monthly Notices of the Royal Astronomical Society. 1986, Vol 219, Num 1, pp 5p-11p, issn 0035-8711Article

The effects of stellar-absorption features on the broad-line profiles of Seyfert 1 galaxiesCRENSHAW, D. M; PETERSON, B. M.The Astrophysical journal. 1985, Vol 291, Num 2, pp 677-684, issn 0004-637X, part 1Article

Outflow in the nucleus of the Seyfert I galaxy NGC 3783WAMSTEKER, W; BARR, P.The Astrophysical journal. 1985, Vol 292, Num 2, pp L45-L49, issn 0004-637X, . 2Article

Observations of upper-level hydrogen lines in Seyfert 1 galaxiesMCALARY, C. W; RIEKE, G. H; LEBOFSKY, M. J et al.The Astrophysical journal. 1986, Vol 301, Num 1, pp 105-115, issn 0004-637XArticle

A search for «dwarf» Seyfert 1 nuclei. I: The initial data and resultsFILIPPENKO, A. V; SARGENT, W. L. W.The Astrophysical journal. Supplement series. 1985, Vol 57, Num 3, pp 503-522, issn 0067-0049Article

Variability in the optical continuum of type 1 Seyfert nucleiDE RUITER, H. R; LUB, J.Symposium - International astronomical union. 1985, Num 119, pp 89-90, issn 0074-1809Article

X-ray studies of quasarsZHANG HE-QI; LIU RU-LIANG; YANG HAI-SHOU et al.Chinese physics. 1984, Vol 4, Num 1, pp 36-45, issn 0273-429XArticle

Spatially extended narrow emission-line gas in the Seyfert galaxy NGC 4151HECKMAN, T. M; BALICK, B.The Astrophysical journal. 1983, Vol 268, Num 1, pp 102-104, issn 0004-637XArticle

Emission lines indicating a universal L/M ratio for the central engine in AGN?WANDEL, A.Astrophysics and space science library. 1986, Vol 121, pp 727-735, issn 0067-0057Article

The variability of the spectrum of Arakelian 120. II: Evidence for a small broad line emitting regionPETERSON, B. M; MEYERS, K. A; CAPRIOTTI, E. R et al.The Astrophysical journal. 1985, Vol 292, Num 1, pp 164-171, issn 0004-637X, 1Article

Observational evidence for the radiative acceleration of broad-line clouds in Seyfert 1 galaxies and quasarsGASKELL, C. M.The Astrophysical journal. 1985, Vol 291, Num 1, pp 112-116, issn 0004-637X, 1Article

Variability of the emission-line spectra and optical continua of Seyfert galaxies. III: Results for a homogeneous samplePETERSON, B. M; CRENSHAW, D. M; MEYERS, K. A et al.The Astrophysical journal. 1985, Vol 298, Num 1, pp 283-291, issn 0004-637XArticle

A new X-ray emitting Seyfert 1 galaxyCRISTIANI, S; TARENGHI, M.Astronomy and astrophysics (Berlin. Print). 1984, Vol 132, Num 2, pp 351-353, issn 0004-6361Article

THE SPECTRUM AND POLARIZATION OF THE NUCLEUS OF NGC 4151SCHMIDT GD; MILLER JS.1980; ASTROPHYS. J.; ISSN 0004-637X; USA; DA. 1980; VOL. 240; NO 3; PART. 1; PP. 759-767; BIBL. 34 REF.Article

CONTINUUM REDDENING OF SEYFERT 1 NUCLEICHENG FZ; DANESE L; DE ZOTTI G et al.1983; MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY; ISSN 0035-8711; GBR; DA. 1983; VOL. 204; NO 1; PP. 13P-18P; BIBL. 19 REF.Article

ON GASEOUS DISKS IN SEYFERT 1 NUCLEIANDERSON KS.1982; ASTROPHYSICAL JOURNAL; ISSN 0004-637X; USA; DA. 1982; VOL. 262; NO 2; PART. 1; PP. 554-555; BIBL. 10 REF.Article

ARIEL V X-RAY OBSERVATIONS OF TWO TYPE I SEYFERT GALAXIESHAYES MJC; CULHANE JL; BELL BURNELL SJ et al.1980; MONTH. NOT. R. ASTR. SOC.; GBR; DA. 1980; VOL. 192; NO 1; PP. 1P-6P; BIBL. 21 REF.Article

SPECTROPHOTOMETRY OF THE SEYFERT GALAXY NGC 4593MACALPINE GM; WILLIAMS GA; LEWIS DW et al.1979; PUBL. ASTR. SOC. PACIF.; USA; DA. 1979-1980; VOL. 91; NO 544; PP. 746-748; BIBL. 8 REF.Article

Echelle spectroscopy of the Seyfert 1 galaxy Markarian 231RUDY, R. J; FOLTZ, C. B; STOCKE, J. T et al.The Astrophysical journal. 1985, Vol 288, Num 2, pp 531-534, issn 0004-637X, 1Article

The pattern of variability of the far UV spectrum of the Seyfert I galaxy NGC 4593CLAVEL, J.Physica scripta. T. 1984, Vol 7, pp 170-171, issn 0281-1847Article