@incollection{SB_1964-1966__9__57_0,
     author = {Haefliger, Andr\'e},
     title = {Sph\`eres d'homotopie nou\'ees},
     booktitle = {S\'eminaire Bourbaki : ann\'ees 1964/65 1965/66, expos\'es 277-312},
     series = {S\'eminaire Bourbaki},
     note = {talk:280},
     pages = {57--68},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {9},
     year = {1966},
     mrnumber = {1608785},
     zbl = {0196.55904},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1964-1966__9__57_0/}
}