@article{JRAM_1969__234_150911,
     author = {Hans-Joachim Kanold},
     title = {\"Uber befreundete {Zahlen.} {III.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {207--215},
     publisher = {mathdoc},
     volume = {234},
     year = {1969},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1969__234_150911/}
}