@article{10_14712_1213_7243_2015_211,
     author = {Song, Yan-Kui},
     title = {A note on spaces with countable extent},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {397--399},
     publisher = {mathdoc},
     volume = {58},
     number = {3},
     year = {2017},
     doi = {10.14712/1213-7243.2015.211},
     mrnumber = {3708782},
     zbl = {06837074},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.211/}
}