TY - JOUR AU - Cavazos-Cadena, Rolando TI - Weak conditions for the existence of optimal stationary policies in average Markov decision chains with unbounded costs JO - Kybernetika PY - 1989 SP - 145 EP - 156 VL - 25 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_1989__25_3_a0/ LA - en ID - KYB_1989__25_3_a0 ER -