TY - JOUR AU - Robert Paré TI - Contravariant Functors on Finite Sets and Stirling Numbers JO - Theory and applications of categories PY - 1999 SP - 65 EP - 76 VL - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_1999_6_a4/ LA - en ID - TAC_1999_6_a4 ER -