TY - JOUR AU - Tsao, Yu-Chung AU - Fan, Hui-Ling AU - Liao, Lu-Wen AU - Vu, Thuy-Linh AU - Lee, Pei-Ling TI - Two-level promotion and ordering policy in a supply chain JO - RAIRO. Operations Research PY - 2021 SP - S119 EP - S145 VL - 55 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/ro/2019086/ DO - 10.1051/ro/2019086 LA - en ID - RO_2021__55_S1_S119_0 ER -