@book{AST_1983__98-99_,
     author = {Collectif},
     title = {Bifurcation, th\'eorie ergodique et applications - 22-26 juin 1981},
     series = {Ast\'erisque},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {98-99},
     year = {1982},
     zbl = {0509.00012},
     language = {mul},
     url = {http://www.numdam.org/item/AST_1983__98-99_/}
}

Bifurcation, théorie ergodique et applications - 22-26 juin 1981. Astérisque, no. 98-99 (1982), 234 p. http://numdam.org/item/AST_1983__98-99_/