Authors: KOTOV VA LYUTY VM HANEYCHUK VI MERKULOVA NI METIK LP METLOV VG

Citation: Va. Kotov et al., THE LONG-TERM PERIODIC OSCILLATION OF THE NGC-4151 NUCLEUS, The Astrophysical journal, 488(1), 1997, pp. 195-201

Authors: PRONIK II METIK LP MERKULOVA NI

Citation: Ii. Pronik et al., LONG AND SHORT-TERM VARIABILITY OF THE EMISSION-LINES IN THE NUCLEAR-SPECTRUM OF THE SEYFERT-GALAXY NGC-7469, Astronomy and astrophysics, 318(3), 1997, pp. 721-728

Authors: PRONIK II METIK LP MERKULOVA NI

Citation: Ii. Pronik et al., DIFFERENCES IN THE EMISSION-LINE SPECTRUM AT MAXIMUM AND MINIMUM OF THE NUCLEAR BRIGHTNESS OF THE SEYFERT-GALAXY NGC-7469, Astrophysics and space science, 239(1), 1996, pp. 97-111