TY  - JOUR
AU  - V. K. Romanko
TI  - On boundary value problems for differential operator equations that are not solved for the highest derivative
JO  - Doklady Akademii Nauk
PY  - 1977
SP  - 1030
EP  - 1033
VL  - 235
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1977_235_5_a10/
LA  - ru
ID  - DAN_1977_235_5_a10
ER  -