%0 Journal Article
%A V. S. Mokeichev
%T Eigenvalues of a periodic boundary value problem for certain partial differential equations
%J Differencialʹnye uravneniâ
%D 1976
%P 356-358
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_2_a21/
%G ru
%F DE_1976_12_2_a21