@article{CMUC_1974__15_4_a1,
     author = {Ad\'amek, Ji\v{r}{\'\i}},
     title = {Free algebras and automata realizations in the language of categories},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {589--602},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1974},
     mrnumber = {0352209},
     zbl = {0293.18006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1974__15_4_a1/}
}