Othman, J., and Y. Jafari. “Effects of Cooking Oil Subsidy Removals on Related Markets in Malaysia: A Comparative Static, Multicommodity, Multi Stage Production Approach”. International Journal of Management Studies, vol. 18, no. 2, Dec. 2011, pp. 121-44, https://e-journal.uum.edu.my/index.php/ijms/article/view/10351.