TY  - JOUR
AU  - V. G. Prikazchikov
TI  - Two-Sided Estimates of Eigenvalues of an Elliptic Operator
JO  - Differencialʹnye uravneniâ
PY  - 2003
SP  - 974
EP  - 981
VL  - 39
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2003_39_7_a12/
LA  - ru
ID  - DE_2003_39_7_a12
ER  -