%0 Journal Article
%A R. Heath
%A Richard Hodel
%T Characterizations of σ-spaces
%J Fundamenta Mathematicae
%D 1972
%P 271-275
%V 77
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-77-3-271-275/
%R 10.4064/fm-77-3-271-275
%G en
%F 10_4064_fm_77_3_271_275