TY  - JOUR
AU  - A. S. Makin
TI  - Some properties of the eigen- and associated functions of an elliptic second-order operator
JO  - Differencialʹnye uravneniâ
PY  - 1988
SP  - 116
EP  - 123
VL  - 24
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1988_24_1_a13/
LA  - ru
ID  - DE_1988_24_1_a13
ER  -