@article{BUMI_2007_8_10B_2_a14,
     author = {Duszy\'nski, Zbigniew},
     title = {Remarks on $\mathcal{S}${-Closedness} in {Topological} {Spaces}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {469--483},
     publisher = {mathdoc},
     volume = {Ser. 8, 10B},
     number = {2},
     year = {2007},
     zbl = {1139.54002},
     mrnumber = {2339455},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2007_8_10B_2_a14/}
}