D. Sharmila and R. Uthayakumar (2016) “Inventory Model for Deteriorating Items Involving Trade Credit Policy in Three-Echelon Supply Chain System”, International Journal of Mathematics And its Applications, 4(2 - D), pp. 139–152. Available at: https://ijmaa.in/index.php/ijmaa/article/view/1077 (Accessed: 22 July 2024).