TY - JOUR AU - M. T. Terekhin TI - Conditions for the existence of a singular value of the parameter of a system of ordinary differential equations JO - Differencialʹnye uravneniâ PY - 1991 SP - 238 EP - 242 VL - 27 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1991_27_2_a6/ LA - ru ID - DE_1991_27_2_a6 ER -