@article{MZ_1973__133_171941,
     author = {Guido Karrer},
     title = {Graded {Division} {Algebras.}},
     journal = {Mathematische Zeitschrift},
     pages = {67--74},
     year = {1973},
     volume = {133},
     zbl = {0276.16016},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__133_171941/}
}