%0 Journal Article
%A J. W. Addison
%T Separation principles in the hierarchies of classical and effective descriptive set theory
%J Fundamenta Mathematicae
%D 1958
%P 123-135
%V 46
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-46-2-123-135/
%R 10.4064/fm-46-2-123-135
%G en
%F 10_4064_fm_46_2_123_135