%0 Journal Article
%A M. S. Salakhitdinov
%A Z. Kadyrov
%T A problem with a normal derivative for an equation of mixed type with nonsmooth lines of degeneracy
%J Differencialʹnye uravneniâ
%D 1986
%P 103-114
%V 22
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1986_22_1_a12/
%G ru
%F DE_1986_22_1_a12