TY  - JOUR
AU  - V. K. Romanko
TI  - Boundary-value problems for operators in two variables with non-homogeneous principal part
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 269
EP  - 272
VL  - 159
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_159_2_a8/
LA  - ru
ID  - DAN_1964_159_2_a8
ER  -