TY  - JOUR
AU  - N. N. Nefedov
TI  - The method of differential inequalities for nonlinear singularly perturbed problems with contrast structures of step type in the critical case
JO  - Differencialʹnye uravneniâ
PY  - 1996
SP  - 1529
EP  - 1537
VL  - 32
IS  - 11
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1996_32_11_a12/
LA  - ru
ID  - DE_1996_32_11_a12
ER  -