TY  - JOUR
AU  - F. S. Rofe-Beketov
TI  - On the spectrum of non-selfadjoint differential operators with periodic coefficients
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 1312
EP  - 1315
VL  - 152
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_152_6_a10/
LA  - ru
ID  - DAN_1963_152_6_a10
ER  -