%0 Journal Article %A György Targonski %T Progress of iteration theory since 1981. %J Aequationes mathematicae %D 1995 %P 50-72 %V 50 %N 1-2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1995__50_1-2_137620/ %F AM2_1995__50_1-2_137620