-
[1]
J. C. Mather et al., Ap. J., L37(1990), 354.[2] S. Weinberg, Gravitation and Cosmology, John Wiley,1972.[3] T. J. Broadhurst et al., Nature, 343(1990), 726.[4] W. L. Huang, Commun. Theor. Phys. (Beijing, China),13(1990), 129.[5] J. G. Bartlett et al., Phys. Rev. Lett., 66(1991), 541.[6] W. L. Hua}g et al., Science Bulletin (Beijing, China),33(1988), 20.