@article{JRAM_1973__258_151277,
     author = {Eckart Maus},
     title = {Relationen in {Verzweigungsgruppen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {23--50},
     year = {1973},
     volume = {258},
     zbl = {0263.12008},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__258_151277/}
}