TY - JOUR AU - V. I. Kachalov TI - Existence of solutions that are smooth with respect to the parameter for singularly perturbed equations JO - Differencialʹnye uravneniâ PY - 1990 SP - 1641 EP - 1643 VL - 26 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1990_26_9_a23/ LA - ru ID - DE_1990_26_9_a23 ER -