%0 Journal Article
%A Z. Ratajczyk
%T A combinatorial analysis of functions provably recursive in $ΙΣ_n$
%J Fundamenta Mathematicae
%D 1988
%P 191-213
%V 130
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-130-3-191-213/
%R 10.4064/fm-130-3-191-213
%G en
%F 10_4064_fm_130_3_191_213