%0 Journal Article
%A B. D. Annin
%T A certain property of a solution of the equation $u_{xx}u_{yy}-u_{xy}^2=1$
%J Doklady Akademii Nauk
%D 1966
%P 499-501
%V 168
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1966_168_3_a1/
%G ru
%F DAN_1966_168_3_a1