TY  - JOUR
AU  - M. S. Salakhitdinov
AU  - Z. Kadyrov
TI  - A problem with a normal derivative for an equation of mixed type with nonsmooth lines of degeneracy
JO  - Differencialʹnye uravneniâ
PY  - 1986
SP  - 103
EP  - 114
VL  - 22
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1986_22_1_a12/
LA  - ru
ID  - DE_1986_22_1_a12
ER  -