@article{JTNB_2017__29_1_201_0,
     author = {Ayad, Mohamed and Bouchenna, Rachid and Kihel, Omar},
     title = {Indices in a {Number} {Field}},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {201--216},
     publisher = {Soci\'et\'e Arithm\'etique de Bordeaux},
     volume = {29},
     number = {1},
     year = {2017},
     doi = {10.5802/jtnb.976},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jtnb.976/}
}