@article{JRAM_1991__419_153341,
     author = {Sybilla Beckmann},
     title = {On extensions of number fields obtained by specializing branched coverings.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {27--54},
     year = {1991},
     volume = {419},
     zbl = {0721.11052},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1991__419_153341/}
}