M. Mullai, and R. Surya. “ Neutrosophic Inventory Backorder Problem Using Triangular Neutrosophic Numbers”. Neutrosophic Sets and Systems 31, no. 2020-07-31 (July 31, 2020): 148-155. Accessed June 4, 2023. http://fs.unm.edu/NSS2/index.php/111/article/view/438.