TY - JOUR AU - R. Aragona AU - A. D'Andrea TI - Normal form in Hecke-Kiselman monoids associated with simple oriented graphs JO - Algebra and discrete mathematics PY - 2020 SP - 161 EP - 171 VL - 30 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ADM_2020_30_2_a0/ LA - en ID - ADM_2020_30_2_a0 ER -