TY  - JOUR
AU  - V. F. Butuzov
TI  - A singularly perturbed equation of elliptic type with two small parameters
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 1793
EP  - 1803
VL  - 12
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_10_a6/
LA  - ru
ID  - DE_1976_12_10_a6
ER  -