@article{CMUC_1963__4_4_a1,
     author = {Drbohlav, Karel},
     title = {Concerning representations of small categories},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {147--151},
     publisher = {mathdoc},
     volume = {04},
     number = {4},
     year = {1963},
     mrnumber = {0166243},
     zbl = {0142.25403},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1963__4_4_a1/}
}