TY  - JOUR
AU  - Yu. S. Shatalov
TI  - A certain method of investigating singular problems
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 2215
EP  - 2229
VL  - 4
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_12_a6/
LA  - ru
ID  - DE_1968_4_12_a6
ER  -