TY  - JOUR
AU  - V. N. Shapovalov
TI  - Separation of variables in a second-order linear differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1980
SP  - 1864
EP  - 1874
VL  - 16
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1980_16_10_a14/
LA  - ru
ID  - DE_1980_16_10_a14
ER  -