%0 Journal Article
%A A. I. Perov
%T A boundary-value problem for a system of two differential equations
%J Doklady Akademii Nauk
%D 1962
%P 493-496
%V 144
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1962_144_3_a7/
%G ru
%F DAN_1962_144_3_a7