@article{CTGDC_1979__20_2_199_0,
     author = {Hoffmann, Rudolf-E.},
     title = {Note on universal topological completion},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {199--216},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {20},
     number = {2},
     year = {1979},
     mrnumber = {548489},
     zbl = {0429.18002},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1979__20_2_199_0/}
}