%0 Journal Article
%A V. M. Gordienko
%T On quadrangles on surfaces of constant curvature
%J Matematičeskie trudy
%D 1992
%P 124-133
%V 22
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MT_1992_22_a5/
%G ru
%F MT_1992_22_a5