%0 Journal Article
%A Yu. I. Kulakov
%T The geometry of spaces of constant curvature as a special case of the theory of physical structures
%J Doklady Akademii Nauk
%D 1970
%P 985-987
%V 193
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1970_193_5_a5/
%G ru
%F DAN_1970_193_5_a5