@article{CTGDC_1983__24_4_393_0,
     author = {Lever, David B.},
     title = {Continuous families : categorical aspects},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {393--432},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {24},
     number = {4},
     year = {1983},
     mrnumber = {749470},
     zbl = {0535.18004},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1983__24_4_393_0/}
}