TY - JOUR AU - B. F. Bylov TI - The symmetry property of the almost reducibility concept JO - Differencialʹnye uravneniâ PY - 1969 SP - 556 EP - 559 VL - 5 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1969_5_3_a15/ LA - ru ID - DE_1969_5_3_a15 ER -