@incollection{SB_1968-1969__11__23_0,
     author = {Godbillon, Claude},
     title = {Travaux de {D.} {Anosov} et {S.} {Smale} sur les diff\'eomorphismes},
     booktitle = {S\'eminaire Bourbaki : vol. 1968/69, expos\'es 347-363},
     series = {S\'eminaire Bourbaki},
     note = {talk:348},
     pages = {23--35},
     publisher = {Springer-Verlag},
     number = {11},
     year = {1971},
     zbl = {0208.25704},
     language = {fr},
     url = {http://archive.numdam.org/item/SB_1968-1969__11__23_0/}
}