%0 Journal Article
%A Mildenberger, Heike
%T On the groupwise density number for filters
%J Acta Universitatis Carolinae. Mathematica et Physica
%D 2005
%P 55-63
%V 46
%N 2
%I mathdoc
%U https://geodesic-test.mathdoc.fr/item/AUCMP_2005__46_2_a9/
%G en
%F AUCMP_2005__46_2_a9