@article{JTNB_1990__2_2_413_0,
     author = {Travesa, Artur},
     title = {Nombre d'extensions ab\'eliennes sur {Q}},
     journal = {S\'eminaire de th\'eorie des nombres de Bordeaux},
     pages = {413--423},
     publisher = {Universit\'e Bordeaux I},
     volume = {2e s{\'e}rie, 2},
     number = {2},
     year = {1990},
     mrnumber = {1081733},
     zbl = {0732.11058},
     language = {fr},
     url = {http://www.numdam.org/item/JTNB_1990__2_2_413_0/}
}