TY  - JOUR
AU  - A. Yanushauskas
TI  - On non-strongly-elliptic systems of second-order partial differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1986
SP  - 1984
EP  - 1990
VL  - 22
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1986_22_11_a16/
LA  - ru
ID  - DE_1986_22_11_a16
ER  -