TY  - JOUR
AU  - G. V. Sherbina
TI  - Nonlinear boundary value problems for second-order equations
JO  - Differencialʹnye uravneniâ
PY  - 1981
SP  - 1050
EP  - 1059
VL  - 17
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1981_17_6_a10/
LA  - ru
ID  - DE_1981_17_6_a10
ER  -