@article{MOMA_1971__75_177550,
     author = {G. Gwehenberger},
     title = {\"Uber den {Grad} von rationalen {Funktionen,} die {Permutationen} darstellen.},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {215--222},
     year = {1971},
     volume = {75},
     zbl = {0222.12020},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1971__75_177550/}
}