%0 Journal Article
%A P. I. Petrov
%T The fundamental problem of non-Riemannian geometry in a binary region
%J Doklady Akademii Nauk
%D 1961
%P 766-768
%V 140
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1961_140_4_a7/
%G ru
%F DAN_1961_140_4_a7