%0 Journal Article
%A V. V. Gudkov
%A A. Ya. Lepin
%T On necessary and sufficient conditions for the solvability of certain boundary-value problems for a second-order ordinary differential equation
%J Doklady Akademii Nauk
%D 1973
%P 760-762
%V 210
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_210_4_a2/
%G ru
%F DAN_1973_210_4_a2