@article{CTGDC_1972__13_1_57_0,
     author = {Guitart, Ren\'e},
     title = {Foncteurs sous-objets et relations continues},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {57--100},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {13},
     number = {1},
     year = {1972},
     mrnumber = {335590},
     zbl = {0367.18006},
     language = {fr},
     url = {http://www.numdam.org/item/CTGDC_1972__13_1_57_0/}
}