@article{AUPO_1996__35_1_a6,
     author = {Kepka, Tom\'a\v{s} and N\v{e}mec, Petr},
     title = {Simple balanced groupoids},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {53--60},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1996},
     mrnumber = {1485044},
     zbl = {0963.20036},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1996__35_1_a6/}
}