TY  - JOUR
AU  - È. M. Saak
TI  - The Riemann problem for nonselfadjoint elliptic differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1987
SP  - 1360
EP  - 1366
VL  - 23
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1987_23_8_a8/
LA  - ru
ID  - DE_1987_23_8_a8
ER  -