Lim, Jie Qi, and Sie Long Kek. “Mathematical Simulation of Optimal Student Loan Repayment Using First-Order Linear Ordinary Differential Equation”. Enhanced Knowledge in Sciences and Technology, vol. 3, no. 1, Aug. 2023, pp. 128-34, https://publisher.uthm.edu.my/periodicals/index.php/ekst/article/view/10828.