1. Optical variability of the quasar 3C 345

   • M. K. Babadzhanyants
   • E. T. Belokon'

   OriginalPaper Pages: 461 - 469

2. Investigation of the nuclear region of the Seyfert galaxy NGC 1275

   • L. P. Metik
   • I. I. Pronik

   OriginalPaper Pages: 470 - 478

3. Emission-line galaxies in the cluster A 634

   • D. A. Stepanyan

   OriginalPaper Pages: 478 - 484

4. Isodensitometry of selected interacting galaxies. II

   • Yu. P. Korovyakovskii

   OriginalPaper Pages: 484 - 490

5. Preferential orientation of Seyfert galaxies as a selection effect

   • V. P. Reshetnikov

   OriginalPaper Pages: 491 - 494

6. Are cells seen in a deep sample of galaxies?

   • B. I. Fesenko

   OriginalPaper Pages: 495 - 498

7. Formation of the superhigh energy spectrum of cosmic rays in the nuclei of active galaxies

   • F. A. Agaronyan
   • A. S. Ambartsumyan

   OriginalPaper Pages: 499 - 503

8. Radio astronomical observations of the occulatation of the Crab nebula by the Moon on January 26, 1983

   • M. I. Agafonov
   • A. M. Aslanyan
   • S. P. Stolyarov

   OriginalPaper Pages: 503 - 507

9. Spectral classes of the cold components of U Gem type stars

   • G. G. Tovmasyan

   OriginalPaper Pages: 507 - 510

10. Expansion of sobolev functions in series in Laguerre polynomials

    • K. I. Selyakov

    OriginalPaper Pages: 511 - 519

11. The asymptotic radiation regime in the outer layers of a homogeneous sphere of large optical radius

    • A. K. Kolesov

    OriginalPaper Pages: 519 - 527

12. Statistical description of radiation fields on the basis of the invariance principle. I. Mean number of scatterings in a medium illuminated from without

    • A. G. Nikogosyan

    OriginalPaper Pages: 527 - 537

13. Remark on allowance for the motion of electrons that interact with photons in astrophysical problems

    • G. T. Ter-Kazaryan

    OriginalPaper Pages: 538 - 543

14. Time of establishment of ionization equilibrium in a hot rarefied gas

    • K. A. Sidorov

    OriginalPaper Pages: 544 - 548

15. Some astrophysical consequences of a dynamical interpretation of gravitation

    • Yu. V. Baryshev
    • V. V. Sokolov

    OriginalPaper Pages: 548 - 551

16. Models of incompressible fluid configurations with allowance for the part played by the gravitational vacuum

    • L. Sh. Grigoryan

    OriginalPaper Pages: 551 - 557

17. Two-chamber image converter for 6-m telescope

    • G. I. Bryukhnevich
    • L. V. Gyavgyanen
    • E. I. Titkov

    OriginalPaper Pages: 558 - 562

18. Possibilities of slitless spectrograph for the 6-m telescope and the 1-m Zeiss telescope

    • N. A. Tikhonov
    • M. F. Shabanov

    OriginalPaper Pages: 563 - 567

19. Multiple Trapezium type systems

    • L. V. Mirzoyan
    • G. N. Salukvadze

    Reviews Pages: 567 - 579