Khalid MA, Md Dan MF, Faizal Pakir, et al. Optimal Slope Angles and Berm Configurations for Rockfall Hazard Reduction Using Discrete Element Modelling and Statistical Analysis. ijscet. 2026;17(1):288-302. Accessed August 12, 2026. https://journal.uthm.edu.my/index.php/IJSCET/article/view/21841