%0 Journal Article %A Havel, Václav %T Coordinatization of parallel systems %J Commentationes Mathematicae Universitatis Carolinae %D 1966 %P 325-334 %V 7 %N 3 %U http://geodesic.mathdoc.fr/item/CMUC_1966_7_3_a7/ %G en %F CMUC_1966_7_3_a7