%0 Journal Article
%A H. Potoczny
%T Closure-preserving families of finite sets
%J Fundamenta Mathematicae
%D 1975
%P 173-176
%V 89
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-89-2-173-176/
%R 10.4064/fm-89-2-173-176
%G en
%F 10_4064_fm_89_2_173_176