TY  - JOUR
AU  - G. V. Sherbina
TI  - On the question of a priori estimates for solutions of second-order equations
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 1840
EP  - 1847
VL  - 15
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_10_a11/
LA  - ru
ID  - DE_1979_15_10_a11
ER  -