@article{AUPO_1997_36_1_a13,
     author = {Machala, Franti\v{s}ek and Slez\'ak, Vladim{\'\i}r},
     title = {Incidence structures and closure spaces},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {149--156},
     year = {1997},
     volume = {36},
     number = {1},
     mrnumber = {1620553},
     zbl = {0961.06007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1997_36_1_a13/}
}