@incollection{SB_1948-1951__1__123_0,
     author = {Pisot, Charles},
     title = {D\'emonstration \'el\'ementaire du th\'eor\`eme des nombres premiers},
     booktitle = {S\'eminaire Bourbaki : ann\'ees 1948/49 - 1949/50 - 1950/51, expos\'es 1-49},
     series = {S\'eminaire Bourbaki},
     note = {talk:20},
     pages = {123--127},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {1},
     year = {1952},
     mrnumber = {1605145},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1948-1951__1__123_0/}
}