%0 Journal Article
%A M. Yu. Zvyagin
%T Second order equations reducible to $z_{xy}=0$ by a B\"acklund transformation
%J Doklady Akademii Nauk
%D 1991
%P 36-40
%V 316
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1991_316_1_a7/
%G ru
%F DAN_1991_316_1_a7