@article{PIM_1983_N_S_33_47_a18,
     author = {{\DJ}uro Kurepa},
     title = {Some {Approaches} to {Topological} {Spaces}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {133 },
     year = {1983},
     volume = {_N_S_33},
     number = {47},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1983_N_S_33_47_a18/}
}