TY - JOUR AU - M. M. Khapaev AU - G. V. Sholin TI - Singularly perturbed systems containing singular manifolds JO - Doklady Akademii Nauk PY - 1986 SP - 99 EP - 103 VL - 287 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1986_287_1_a22/ LA - ru ID - DAN_1986_287_1_a22 ER -