@article{SDPP_1967-1968__9_2_A7_0,
     author = {Cassels, John William Scott},
     title = {Sommes de racines de l'unit\'e},
     journal = {S\'eminaire Delange-Pisot-Poitou. Th\'eorie des nombres},
     note = {talk:23},
     pages = {1--16},
     publisher = {Secr\'etariat math\'ematique},
     volume = {9},
     number = {2},
     year = {1967-1968},
     zbl = {0186.36702},
     language = {fr},
     url = {http://www.numdam.org/item/SDPP_1967-1968__9_2_A7_0/}
}