%0 Journal Article
%A Kubesa, Michael
%A Froncek, Dalibor
%T Problem presented at the workshop in Krynica 2004
%J Discussiones Mathematicae. Graph Theory
%D 2006
%P 351
%V 26
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DMGT_2006_26_2_a15/
%G en
%F DMGT_2006_26_2_a15