TY  - JOUR
AU  - I. M. Petrushko
TI  - The Fredholmicity of certain boundary value problems for the equation $u_{xx}+yu_{yy}+\alpha(x,y)u_y+\beta(x,y)u_x+\gamma(x,y)u=f(x,y)$ in a mixed domain
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 123
EP  - 135
VL  - 4
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_1_a10/
LA  - ru
ID  - DE_1968_4_1_a10
ER  -