@article{ARM_1972_8_1_a4,
     author = {Karpe, Robert},
     title = {Zwei {Typen} der {Kombinationen} zur bestimmten {Summe,} deren {Anzahl} durch direkte {Formel} festgestellt werden kann},
     journal = {Archivum mathematicum},
     pages = {51--56},
     year = {1972},
     volume = {8},
     number = {1},
     mrnumber = {0314635},
     zbl = {0267.05008},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ARM_1972_8_1_a4/}
}