%0 Journal Article
%A R. Brown
%A K.H. Kamps
%A T. Porter
%T A homotopy double groupoid of a Hausdorff
space II:  a van Kampen theorem
%J Theory and applications of categories
%D 2005
%P 200-220
%V 14
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TAC_2005_14_a8/
%G en
%F TAC_2005_14_a8