%0 Journal Article
%A Jan Pelant
%A Petr Simon
%A Jerry Vaughan
%T The smallest number of free closed filters
%J Fundamenta Mathematicae
%D 1988
%P 215-221
%V 131
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/fm-131-3-215-221/
%R 10.4064/fm-131-3-215-221
%G en
%F 10_4064_fm_131_3_215_221