TY - JOUR AU - Hájek, Otomar TI - Differentiable representation of flows (Preliminary communication) JO - Commentationes Mathematicae Universitatis Carolinae PY - 1966 SP - 219 EP - 225 VL - 07 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1966__7_2_a5/ LA - en ID - CMUC_1966__7_2_a5 ER -