%0 Journal Article
%A Piper, Greg
%T Regular closure and corresponding ${\Cal P}_K \lambda$ versions of $\diamondsuit$ and $\clubsuit$
%J Acta Universitatis Carolinae. Mathematica et Physica
%D 2005
%P 67-76
%V 46
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AUCMP_2005__46_2_a11/
%G en
%F AUCMP_2005__46_2_a11