@article{CTGDC_1994__35_3_249_0,
     author = {Kock, Anders and Reyes, Gonzalo E.},
     title = {Relatively boolean and {De} {Morgan} toposes and locales},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {249--261},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {35},
     number = {3},
     year = {1994},
     mrnumber = {1295120},
     zbl = {0806.18002},
     language = {en},
     url = {http://archive.numdam.org/item/CTGDC_1994__35_3_249_0/}
}