TY  - JOUR
AU  - I. A. Kipriyanov
TI  - Asymptotic distribution of eigenvalues and eigenfunctions of a certain class of singular elliptic operators
JO  - Informatics and Automation
PY  - 1972
SP  - 159
EP  - 179
VL  - 117
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1972_117_a9/
LA  - ru
ID  - TRSPY_1972_117_a9
ER  -