@article{700796,
     title = {Realizations of closure spaces by set systems},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1972},
     pages = {85-87},
     mrnumber = {MR0355942},
     zbl = {0335.54001},
     url = {http://dml.mathdoc.fr/item/700796}
}

Chvalina, J.; Sekanina, M. Realizations of closure spaces by set systems, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1972), pp. 85-87. http://gdmltest.u-ga.fr/item/700796/