@article{ASENS_1974_4_7_3_431_0,
     author = {Siebenmann, L. and Guillou, L. and H\"ahl, H.},
     title = {Les voisinages ouverts r\'eguliers : crit\`eres homotopiques d'existence},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {431--461},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 7},
     number = {3},
     year = {1974},
     doi = {10.24033/asens.1275},
     zbl = {0318.57011},
     mrnumber = {362324},
     language = {fr},
     url = {http://archive.numdam.org/articles/10.24033/asens.1275/}
}