@article{JRAM_1991__416_153319,
     author = {Kay Wingberg},
     title = {On {Galois} groups of p-closed algebraic number fields with restricted ramification {II.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {187--194},
     publisher = {mathdoc},
     volume = {416},
     year = {1991},
     zbl = {0728.11058},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1991__416_153319/}
}