TY - JOUR AU - Marco Grandis TI - Quotient models of a category up to directed homotopy JO - Theory and applications of categories PY - 2006 SP - 709 EP - 735 VL - 16 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2006_16_a25/ LA - en ID - TAC_2006_16_a25 ER -