TY  - JOUR
AU  - D. M. Polyakov
TI  - On spectral properties of fourth order differential operator with periodic and semiperiodic boundary conditions
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 2015
SP  - 75
EP  - 79
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_2015_5_a8/
LA  - ru
ID  - IVM_2015_5_a8
ER  -