Adamu, Muminu O., and Gbolahan A Idowu. “Minimizing the Weighted Number of Early and Tardy Jobs on Uniform Machines”. International Journal of Mathematical Sciences and Optimization: Theory and Applications 20150 (April 10, 2018): 1 - 15. Accessed April 4, 2025. http://ijmso.unilag.edu.ng/article/view/3.