@article{CMUC_1982_23_3_a5,
     author = {Meyer zu H\"orste, Ulrich},
     title = {Topological proper separation theorems},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {475--487},
     year = {1982},
     volume = {23},
     number = {3},
     mrnumber = {677856},
     zbl = {0524.46001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1982_23_3_a5/}
}