@article{MOMA_1955__59_176978,
     author = {P. Erd\"os},
     title = {\"Uber die {Anzahl} der {L\"osungen} von [p-1, q-1] ...x.},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {318--319},
     publisher = {mathdoc},
     volume = {59},
     year = {1955},
     zbl = {0067.02302},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1955__59_176978/}
}