@article{CTGDC_1989__30_3_213_0,
     author = {Lowen, E. and Lowen, R.},
     title = {Topological quasitopos hulls of categories containing topological and metric objects},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {213--228},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {30},
     number = {3},
     year = {1989},
     mrnumber = {1029625},
     zbl = {0706.18002},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1989__30_3_213_0/}
}