%0 Journal Article
%A E. S. Lyapin
%T On the existence and uniqueness of a solution to the general type of equation in connection with reversibility 

%J Doklady Akademii Nauk
%D 1957
%P 552-555
%V 116
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1957_116_4_a7/
%G ru
%F DAN_1957_116_4_a7