TY - JOUR AU - M. V. Zaretskii TI - The reducibility of certain linear differential systems JO - Differencialʹnye uravneniâ PY - 1971 SP - 1114 EP - 1115 VL - 7 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_6_a18/ LA - ru ID - DE_1971_7_6_a18 ER -