%0 Journal Article %A A. Błaszczyk %T On maps which are perfect with respect to the Hewitt realcompact extension %J Colloquium Mathematicum %D 1973 %P 57-61 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-27-1-57-61/ %R 10.4064/cm-27-1-57-61 %G en %F 10_4064_cm_27_1_57_61