@article{JTNB_2014__26_3_635_0,
     author = {Gras, Georges},
     title = {On the structure of the {Galois} group of the {Abelian} closure of a number field},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {635--654},
     publisher = {Soci\'et\'e Arithm\'etique de Bordeaux},
     volume = {26},
     number = {3},
     year = {2014},
     doi = {10.5802/jtnb.883},
     mrnumber = {3320496},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jtnb.883/}
}