Galois groups of fields of definition of solvable branched coverings
Compositio Mathematica, Tome 66 (1988) no. 2, pp. 121-144. 
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     author = {Beckmann, Sybilla},
     title = {Galois groups of fields of definition of solvable branched coverings},
     journal = {Compositio Mathematica},
     pages = {121--144},
     publisher = {Kluwer Academic Publishers},
     volume = {66},
     number = {2},
     year = {1988},
     mrnumber = {945548},
     zbl = {0673.14001},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1988__66_2_121_0/}
}
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Beckmann, Sybilla. Galois groups of fields of definition of solvable branched coverings. Compositio Mathematica, Tome 66 (1988) no. 2, pp. 121-144. http://archive.numdam.org/item/CM_1988__66_2_121_0/

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