%0 Journal Article
%A K. P. Stanyukovich
%T Variation principle in general relativity
%J Doklady Akademii Nauk
%D 1963
%P 562-565
%V 153
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_153_3_a17/
%G ru
%F DAN_1963_153_3_a17