@article{MZ_1966__93_170596,
     author = {T. Kambayashi},
     title = {A {Note} on {Groups} in a {Category.}},
     journal = {Mathematische Zeitschrift},
     pages = {289--293},
     publisher = {mathdoc},
     volume = {93},
     year = {1966},
     zbl = {0144.25701},
     url = {http://geodesic.mathdoc.fr/item/MZ_1966__93_170596/}
}