On the NGC 1275 nucleus variability in optical and radio wavelength regions. Merkulova, N. I. ; Metik, L. P. ; Pronik, I. I. Abstract Publication: Izvestiya Ordena Trudovogo Krasnogo Znameni Krymskoj Astrofizicheskoj Observatorii Pub Date: 1992 Bibcode: 1992IzKry..85...82M