TY - JOUR AU - N. N. Nefedov TI - The method of differential inequalities for some classes of nonlinear singularly perturbed problems with internal layers JO - Differencialʹnye uravneniâ PY - 1995 SP - 1142 EP - 1149 VL - 31 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1995_31_7_a3/ LA - ru ID - DE_1995_31_7_a3 ER -