TY  - JOUR
AU  - V. S. Mokeichev
TI  - Eigenvalues of a periodic boundary value problem for certain partial differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 356
EP  - 358
VL  - 12
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_2_a21/
LA  - ru
ID  - DE_1976_12_2_a21
ER  -