@article{CMUC_1987_28_2_a11,
     author = {Frol{\'\i}k, Zden\v{e}k},
     title = {A note on countably determined and distinguishable sets},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {301--310},
     year = {1987},
     volume = {28},
     number = {2},
     mrnumber = {904755},
     zbl = {0652.54027},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1987_28_2_a11/}
}