TY - JOUR AU - T. R. Gichev TI - A singularly perturbed linear system in a critical case JO - Differencialʹnye uravneniâ PY - 1987 SP - 1851 EP - 1861 VL - 23 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1987_23_11_a1/ LA - ru ID - DE_1987_23_11_a1 ER -