TY - JOUR AU - Hiroyuki Nakaoka TI - Cohomology theory in 2-categories JO - Theory and applications of categories PY - 2008 SP - 543 EP - 604 VL - 20 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2008_20_a15/ LA - en ID - TAC_2008_20_a15 ER -