%0 Journal Article
%A Joao Faria Martins
%A Timothy Porter
%T On Yetter's Invariant and an Extension of the Dijkgraaf-Witten Invariant to Categorical Groups
%J Theory and applications of categories
%D 2007
%P 118-150
%V 18
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TAC_2007_18_a3/
%G en
%F TAC_2007_18_a3