@incollection{SB_1989-1990__32__203_0,
     author = {Ghys, \'Etienne},
     title = {Les groupes hyperboliques},
     booktitle = {S\'eminaire Bourbaki : volume 1989/90, expos\'es 715-729},
     series = {Ast\'erisque},
     note = {talk:722},
     pages = {203--238},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {189-190},
     year = {1990},
     mrnumber = {1099877},
     zbl = {0744.20036},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1989-1990__32__203_0/}
}