@article{BAG_1987__25_138381,
     author = {J. Schreckenberger},
     title = {Mehrfache {Partialisierung} von {Kategorien}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {109--122},
     publisher = {mathdoc},
     volume = {25},
     year = {1987},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/BAG_1987__25_138381/}
}