%0 Journal Article
%A A. G. Doroshkevich
%A I. D. Novikov
%T Mean radiation density in Metagalaxy and some problems of relativistic cosmology
%J Doklady Akademii Nauk
%D 1964
%P 809-811
%V 154
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_154_4_a16/
%G ru
%F DAN_1964_154_4_a16