%0 Journal Article %A Demuth, Osvald %T Reducibilities of sets based on constructive functions of a real variable %J Commentationes Mathematicae Universitatis Carolinae %D 1988 %P 143-156 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1988__29_1_a13/ %G en %F CMUC_1988__29_1_a13