TY  - JOUR
AU  - V. R. Portnov
TI  - The first boundary value problem for a certain class of quasilinear systems of equations that have divergence form
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 285
EP  - 288
VL  - 195
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_195_2_a6/
LA  - ru
ID  - DAN_1970_195_2_a6
ER  -