%0 Journal Article
%A Peter Hinman
%T The finite levels of the hierarchy of effective R-sets
%J Fundamenta Mathematicae
%D 1973
%P 1-10
%V 79
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-79-1-1-10/
%R 10.4064/fm-79-1-1-10
%G en
%F 10_4064_fm_79_1_1_10