TY - JOUR AU - A. N. Yarkin TI - Occurrence of an internal boundary layer in singularly perturbed systems of conditionally stable type JO - Differencialʹnye uravneniâ PY - 1976 SP - 2285 EP - 2286 VL - 12 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1976_12_12_a24/ LA - ru ID - DE_1976_12_12_a24 ER -