1. UBV photometry of galaxies in groups and their neighborhood. the Geller-Huchra group GH 3

   • A. T. Kalloghlian
   • E. H. Nikoghossian

   OriginalPaper Pages: 193 - 204

2. Photographic photometry of two small groups of galaxies

   • R. K. Shahbazian
   • P. Notni
   • F. W. Baier

   OriginalPaper Pages: 205 - 216

3. Spectrophotometric investigation of two Seyfert galaxies

   • M. A. Kazarian

   OriginalPaper Pages: 217 - 221

4. Spectroscopic investigation of three galaxies with a UV excess

   • M. A. Kazarian
   • V. S. Tamazian

   OriginalPaper Pages: 222 - 228

5. Radio luminosities of pulsars and the electron density distribution in the galaxy

   • R. R. Andreassian
   • D. G. Arshakian

   OriginalPaper Pages: 229 - 234

6. Discreteness in the separation velocities of the components of extended double radio sources

   • D. G. Arshakian
   • R. R. Andreassian

   OriginalPaper Pages: 235 - 240

7. Flare activity of stars as a cluster membership criterion

   • L. V. Mirzoyan
   • V. V. Hambarian
   • A. L. Mirzoyan

   OriginalPaper Pages: 241 - 248

8. Unsteady processes in the atmosphere of RW Aurigae

   • N. L. Ivanova

   OriginalPaper Pages: 249 - 253

9. Period-true color relationship for classical Cepheids

   • R. A. Vardanian
   • A. V. Poghossian

   OriginalPaper Pages: 254 - 257

10. Emission of gravitational waves in the scalar-tensor theory of gravitation

    • A. A. Saharian

    OriginalPaper Pages: 258 - 262

11. First Byurakan Spectroscopic Sky Survey. Late-type stars. IV. +61°≤σ≤65° band

    • G. V. Abramian
    • K. S. Gighoian

    OriginalPaper Pages: 263 - 264

12. Interacting galaxies: Observational and theoretical aspects

    • V. P. Reshetnikov
    • N. Ya. Sotnikova

    Review Pages: 265 - 292