%0 Journal Article
%A I. N. Lanin
%T A certain boundary value problem for a second order mixed type equation with several parallel lines of degeneracy
%J Differencialʹnye uravneniâ
%D 1977
%P 168-169
%V 13
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1977_13_1_a23/
%G ru
%F DE_1977_13_1_a23