@article{10_21136_CMJ_1962_100525,
     author = {Frol{\'\i}k, Zden\v{e}k},
     title = {Relations of completeness},
     journal = {Czechoslovak Mathematical Journal},
     pages = {375--381},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1962},
     doi = {10.21136/CMJ.1962.100525},
     mrnumber = {0148029},
     zbl = {0114.13904},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1962.100525/}
}