@article{CMUC_1974__15_1_a0,
     author = {Chytil, Michal P.},
     title = {On changes of input/output coding. {II.}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {1--17},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1974},
     mrnumber = {0373864},
     zbl = {0288.02028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1974__15_1_a0/}
}