@article{SDPP_1972-1973__14_2_A2_0,
     author = {Gras, Georges},
     title = {Aspects num\'eriques de la d\'etermination du $\ell $-groupe des classes d{\textquoteright}id\'eaux des extensions cycliques de degr\'e premier $\ell $},
     journal = {S\'eminaire Delange-Pisot-Poitou. Th\'eorie des nombres},
     note = {talk:18},
     pages = {1--2},
     publisher = {Secr\'etariat math\'ematique},
     volume = {14},
     number = {2},
     year = {1972-1973},
     zbl = {0336.12003},
     language = {fr},
     url = {http://archive.numdam.org/item/SDPP_1972-1973__14_2_A2_0/}
}