%0 Journal Article %A Ramírez-Páramo, Alejandro %T On the cardinality of Hausdorff spaces and Pol-Šapirovskii technique %J Commentationes Mathematicae Universitatis Carolinae %D 2005 %P 131-135 %V 46 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2005__46_1_a11/ %G en %F CMUC_2005__46_1_a11