TY - JOUR AU - A. P. Sadovskii TI - An elementary proof and applications of a theorem of F.~Takens JO - Differencialʹnye uravneniâ PY - 1980 SP - 2284 EP - 2287 VL - 16 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1980_16_12_a21/ LA - ru ID - DE_1980_16_12_a21 ER -