@article{CMUC_1970__11_1_a6,
     author = {Je\v{z}ek, Jaroslav},
     title = {An embedding of groupoids and monomorphisms into simple groupoids},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {91--98},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1970},
     mrnumber = {0260840},
     zbl = {0197.01601},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1970__11_1_a6/}
}