TY  - JOUR
AU  - S. I. Kovalev
TI  - A difference method for solving a two-dimensional spectral problem in an unbounded domain
JO  - Differencialʹnye uravneniâ
PY  - 1987
SP  - 1231
EP  - 1240
VL  - 23
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1987_23_7_a13/
LA  - ru
ID  - DE_1987_23_7_a13
ER  -