TY  - JOUR
AU  - V. A. Erovenko
TI  - Selfadjointness of a differential operator with periodic coefficients
JO  - Differencialʹnye uravneniâ
PY  - 1983
SP  - 380
EP  - 387
VL  - 19
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1983_19_3_a1/
LA  - ru
ID  - DE_1983_19_3_a1
ER  -