TY  - JOUR
AU  - N. Yu. Kapustin
TI  - $L_2$-solvability of boundary value problems for equations of mixed type
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 50
EP  - 59
VL  - 25
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_1_a6/
LA  - ru
ID  - DE_1989_25_1_a6
ER  -