@article{BAG_1991__32_138491,
     author = {Michael Schmitz},
     title = {Die {Zerlegung} von gitterpunktf\"ormigen 2-fachen {Einheitskreispackungen} in drei {Einheitskreispackungen}},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {71--86},
     publisher = {mathdoc},
     volume = {32},
     year = {1991},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/BAG_1991__32_138491/}
}