%0 Journal Article
%A A. Z. Petrov
%A V. R. Kaigorodov
%A V. N. Abdullin
%T Classification of gravitational fields of general type by the group of motions. I, II, III
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1960
%P 158-169
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1960_4_a16/
%G ru
%F IVM_1960_4_a16