%0 Journal Article
%A A. L. Onishchik
%T Connections with zero curvature and de Rham's theorem
%J Doklady Akademii Nauk
%D 1964
%P 988-991
%V 159
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_159_5_a11/
%G ru
%F DAN_1964_159_5_a11