%0 Journal Article
%A B. N. Rachajsky
%T On the Monge-Ampere differential equation $rt - s^{2} + \lambda^{2}(x,y)=0$
%J Matematički vesnik
%D 1969
%P 317 
%V 21
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MV_1969_21_3_a8/
%F MV_1969_21_3_a8