%0 Journal Article
%A T. McLaughlin
%T Degrees of unsolvability within a regressive isol
%J Fundamenta Mathematicae
%D 1974
%P 29-40
%V 86
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-86-1-29-40/
%R 10.4064/fm-86-1-29-40
%G en
%F 10_4064_fm_86_1_29_40