%0 Journal Article
%A V. Balachandran
%T A characterization of ΣΔ-rings of subsets
%J Fundamenta Mathematicae
%D 1955
%P 38-41
%V 41
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-41-1-38-41/
%R 10.4064/fm-41-1-38-41
%G en
%F 10_4064_fm_41_1_38_41