TY - JOUR AU - Claudio Pisani TI - Components, complements and the reflection formula JO - Theory and applications of categories PY - 2007 SP - 19 EP - 40 VL - 19 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2007_19_a1/ LA - en ID - TAC_2007_19_a1 ER -