1. M. Der Sarkissian:Lett, Nuovo Cimento,40, 390 (1984).
2. W. Tifft andW. Cocke:Astrophys. J.,287, 492 (1984)
3. Les Houches Lectures (1979: Sessione XXXII):Physical Cosmology, edited byR. Balian,J. Audouze andD. Schramm (Amsterdam, 1980), p. 117 (in the review article byG. Tammann,A. Sandage andA. Yahil:The determination of cosmological parameters).
4. S. Weinberg:Gravitation and Cosmology (John Wiley and Sons, New York, N. Y., 1972).
5. G. Tovmasyan:Astrophys.,18, 14 (1982)