TY  - JOUR
AU  - Joao Faria Martins
AU  - Timothy Porter
TI  - On Yetter's Invariant and an Extension of the Dijkgraaf-Witten Invariant to Categorical Groups
JO  - Theory and applications of categories
PY  - 2007
SP  - 118
EP  - 150
VL  - 18
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TAC_2007_18_a3/
LA  - en
ID  - TAC_2007_18_a3
ER  -