“Machine-Learning Modeling of Sulfuric-Acid Leaching of Metalliferous Oil-Shale Ash: Predictive Performance, Feature Importance, and Confounding in an Unbalanced Experimental Design”. Eurasian Journal of Engineering and Technology 54 (June 9, 2026): 42–48. Accessed September 27, 2026. https://geniusjournals.org/index.php/ejet/article/view/7670.