@article{CTGDC_1981__22_2_123_0,
     author = {Van Osdol, Donovan H.},
     title = {A {Borel} topos},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {123--128},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {22},
     number = {2},
     year = {1981},
     mrnumber = {649792},
     zbl = {0465.18001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CTGDC_1981__22_2_123_0/}
}