@article{CMUC_1979_20_1_a4,
     author = {Ad\'amek, Ji\v{r}{\'\i} and Herrlich, Horst and Strecker, George E.},
     title = {Least and largest initial completions. {I}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {43--58},
     year = {1979},
     volume = {20},
     number = {1},
     mrnumber = {526147},
     zbl = {0404.18005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1979_20_1_a4/}
}