TY  - JOUR
AU  - V. F. Butuzov
AU  - N. N. Nefedov
TI  - A problem in the theory of singular perturbations
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 1736
EP  - 1747
VL  - 12
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_10_a1/
LA  - ru
ID  - DE_1976_12_10_a1
ER  -