%0 Journal Article %A Pták, Pavel %T A note on normal topological functors and extensions of transformations %J Commentationes Mathematicae Universitatis Carolinae %D 1976 %P 567-574 %V 17 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1976__17_3_a12/ %G en %F CMUC_1976__17_3_a12