@article{RSMUP_1997__97__1_0,
     author = {\v{S}lapal, Josef},
     title = {On a construct of closure spaces},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {1--5},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {97},
     year = {1997},
     mrnumber = {1476157},
     zbl = {0884.18004},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1997__97__1_0/}
}