TY - JOUR AU - T. V. Usacheva TI - Stability of characteristics of diagonal systems of differential equations JO - Differencialʹnye uravneniâ PY - 1983 SP - 909 EP - 911 VL - 19 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_5_a20/ LA - ru ID - DE_1983_19_5_a20 ER -