@article{CMUC_2000_41_1_a15,
     author = {Peregudov, S. A.},
     title = {On $n$-in-countable bases},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {175--178},
     year = {2000},
     volume = {41},
     number = {1},
     mrnumber = {1756937},
     zbl = {1038.54011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2000_41_1_a15/}
}