@article{ASENS_1970_4_3_4_409_0,
     author = {Chenciner, Alain and Laudenbach, Fran\c{c}ois},
     title = {Contribution \`a une th\'eorie de {Smale} \`a un param\`etre dans le cas non simplement connexe},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {409--478},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 3},
     number = {4},
     year = {1970},
     doi = {10.24033/asens.1199},
     mrnumber = {44 #3328},
     zbl = {0236.57015},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1199/}
}