@article{CTGDC_1981__22_3_315_0,
     author = {Ehresmann, Andr\'ee Charles},
     title = {Partial completions of concrete functors},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {315--328},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {22},
     number = {3},
     year = {1981},
     mrnumber = {649079},
     zbl = {0464.18004},
     language = {en},
     url = {http://archive.numdam.org/item/CTGDC_1981__22_3_315_0/}
}