%0 Journal Article %A Andrzej Kisielewicz %T On reduction theorems in the problem of composition of functions %J Fundamenta Mathematicae %D 1990 %P 203-211 %V 135 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-135-3-203-211/ %R 10.4064/fm-135-3-203-211 %G en %F 10_4064_fm_135_3_203_211