@article{CTGDC_1985__26_3_311_0,
     author = {Bruno, Oscar P.},
     title = {Logical opens of exponential objects},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {311--323},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {26},
     number = {3},
     year = {1985},
     mrnumber = {796353},
     zbl = {0576.18003},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1985__26_3_311_0/}
}