Hassan, Mansur, and Surajo Sulaiman. “A Logarithmic Penalty Function Approach for Enhancing the Alkylation Process in Kaduna and Warri Refineries”. MATEMATIKA 40, no. 1 (March 31, 2024): 17–25. Accessed December 4, 2024. https://matematika.utm.my/index.php/matematika/article/view/1514.