@incollection{SB_1958-1960__5__83_0,
     author = {Serre, Jean-Pierre},
     title = {Classes des corps cyclotomiques},
     booktitle = {S\'eminaire Bourbaki : ann\'ees 1958/59 - 1959/60, expos\'es 169-204},
     series = {S\'eminaire Bourbaki},
     note = {talk:174},
     pages = {83--93},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {5},
     year = {1960},
     mrnumber = {1603459},
     zbl = {0119.27603},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1958-1960__5__83_0/}
}