@article{CMUC_1966_7_3_a7,
     author = {Havel, V\'aclav},
     title = {Coordinatization of parallel systems},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {325--334},
     year = {1966},
     volume = {7},
     number = {3},
     mrnumber = {0209962},
     zbl = {0173.22202},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1966_7_3_a7/}
}