@article{CTGDC_1984__25_4_327_0,
     author = {Bourn, Dominique},
     title = {La tour de fibrations exactes des $n$-cat\'egories},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {327--351},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {25},
     number = {4},
     year = {1984},
     mrnumber = {789133},
     zbl = {0562.18007},
     language = {fr},
     url = {http://www.numdam.org/item/CTGDC_1984__25_4_327_0/}
}