%0 Journal Article %A Z. Ratajczyk %T Arithmetical transfinite induction and hierarchies of functions %J Fundamenta Mathematicae %D 1992 %P 1-20 %V 141 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-141-1-1-20/ %R 10.4064/fm-141-1-1-20 %G en %F 10_4064_fm_141_1_1_20