%0 Journal Article %A Nordo, Giorgio %T A basic approach to the perfect extensions of spaces %J Commentationes Mathematicae Universitatis Carolinae %D 1997 %P 571-580 %V 38 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1997__38_3_a13/ %G en %F CMUC_1997__38_3_a13