%0 Journal Article
%A F. I. Fedorov
%T A first-order equation for the gravitational field
%J Doklady Akademii Nauk
%D 1968
%P 802-805
%V 179
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1968_179_4_a12/
%G ru
%F DAN_1968_179_4_a12