TY - JOUR AU - A. E. Rudenok TI - The normal form of some differential equations JO - Differencialʹnye uravneniâ PY - 1978 SP - 747 EP - 749 VL - 14 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1978_14_4_a23/ LA - ru ID - DE_1978_14_4_a23 ER -