%0 Journal Article
%A T. I. Lanina
%T Smoothness of the solution of a certain boundary value problem for an equation of mixed type with two parallel lines of degeneracy
%J Differencialʹnye uravneniâ
%D 1976
%P 97-102
%V 12
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_1_a11/
%G ru
%F DE_1976_12_1_a11