Farok, G. M. G, and M. I.M Wahab. “Retracted: Applications of Mathematical Modeling for Sensitivity and Sustainability in Supply Chain Flexibility”. International Journal of Mathematical Research 5, no. 2 (February 25, 2016): 75–102. Accessed April 28, 2024. https://archive.conscientiabeam.com/index.php/24/article/view/2186.