@article{CMUC_2009__50_3_a10,
     author = {Niemiec, Piotr},
     title = {Central subsets of {Urysohn} universal spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {445--461},
     publisher = {mathdoc},
     volume = {50},
     number = {3},
     year = {2009},
     mrnumber = {2573417},
     zbl = {1212.54093},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2009__50_3_a10/}
}