@article{ASENS_1972_4_5_3_397_0,
     author = {Laudenbach, Fran\c{c}ois},
     title = {Disjonction homotopique et disjonction isotopique : la premi\`ere obstruction},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {397--422},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 5},
     number = {3},
     year = {1972},
     doi = {10.24033/asens.1232},
     mrnumber = {52 #6753},
     zbl = {0239.57014},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1232/}
}