| | Showing all published items in the file for Reference Phrase: "Seyfert galaxies Congresses."| 0521412951 | | Variability of active galactic nuclei / editors, H. Richard Miller and Paul J. Wiita.
| | 9027724733 | | Observational evidence of activity in galaxies : proceedings of the 121st Symposium of the International Astronomical Union, held in Byurakan, Armenia, U.S.S.R., June 3-7, 1986 / edited by E. Ye. Khachikian, K.J. Fricke, and J. Melnick.
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