@incollection{SB_1987-1988__30__203_0,
     author = {Arnoux, Pierre},
     title = {Ergodicit\'e g\'en\'erique des billards polygonaux},
     booktitle = {S\'eminaire Bourbaki : volume 1987/88, expos\'es 686-699},
     series = {Ast\'erisque},
     note = {talk:696},
     pages = {203--221},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {161-162},
     year = {1988},
     mrnumber = {992210},
     zbl = {0671.58023},
     language = {fr},
     url = {http://www.numdam.org/item/SB_1987-1988__30__203_0/}
}