TY - JOUR AU - Sivashankari, C. K. AU - Ramachandran, Lalitha TI - Inventory models with integrated time dependent demands for deteriorating items – in third and fourth order equations JO - RAIRO. Operations Research PY - 2021 SP - 2883 EP - 2905 VL - 55 IS - 5 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/ro/2021099/ DO - 10.1051/ro/2021099 LA - en ID - RO_2021__55_5_2883_0 ER -