@article{CTGDC_1981__22_2_209_0,
     author = {Ad\'amek, Ji\v{r}{\'\i} and Koubek, V\'aclav},
     title = {Completions of concrete categories},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {209--228},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {22},
     number = {2},
     year = {1981},
     mrnumber = {649801},
     zbl = {0464.18003},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1981__22_2_209_0/}
}