TY  - JOUR
AU  - A. L. Ageev
TI  - The method of quasi-solutions for the problem of determining the eigenfunctions of a linear operator
JO  - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki
PY  - 1987
SP  - 643
EP  - 650
VL  - 27
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZVMMF_1987_27_5_a0/
LA  - ru
ID  - ZVMMF_1987_27_5_a0
ER  -