@article{CMUC_1990__31_1_a11,
     author = {Lowen-Colebunders, Eva and Szab\'o, Zolt\'an G\'abor},
     title = {On the simplicity of some categories of closure spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {95--98},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {1990},
     mrnumber = {1056174},
     zbl = {0697.54007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_1_a11/}
}