Kalaiarasi, K., H. Mary Henrietta, and M. Sumathi. “Applying Hessian Matrix Techniques to Obtain the Efficient Optimal Order Quantity Using Fuzzy Parameters”. Communications in Mathematics and Applications 13, no. 2 (August 17, 2022): 725–735. Accessed April 27, 2024. https://www.rgnpublications.com/journals/index.php/cma/article/view/1796.