%0 Journal Article
%A Hans Carstens
%T Reducing hyperarithmetic sequences
%J Fundamenta Mathematicae
%D 1975
%P 5-11
%V 89
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-89-1-5-11/
%R 10.4064/fm-89-1-5-11
%G en
%F 10_4064_fm_89_1_5_11