@article{JRAM_1980__320_152292,
     author = {Franz-Peter Heider},
     title = {Strahlknoten und {Geschlechterk\"orper} mod m.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {52--67},
     publisher = {mathdoc},
     volume = {320},
     year = {1980},
     zbl = {0432.12007},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1980__320_152292/}
}