TY  - JOUR
AU  - A. G. Brusentsev
TI  - Selfadjointness in essentially semibounded higher-order elliptic operators
JO  - Differencialʹnye uravneniâ
PY  - 1985
SP  - 668
EP  - 677
VL  - 21
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1985_21_4_a13/
LA  - ru
ID  - DE_1985_21_4_a13
ER  -