TY - JOUR AU - Cenkl, Bohumil TI - On a connection with torsion zero JO - Commentationes Mathematicae Universitatis Carolinae PY - 1972 SP - 31 EP - 43 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1972__13_1_a2/ LA - en ID - CMUC_1972__13_1_a2 ER -