Ismail, Wan Nurul Aiffah, et al. “A Machine Learning Framework for Multi-Class Lung Disease Classification Using Lung Sounds ”. Applied Mathematics and Computational Intelligence (AMCI), vol. 15, no. 3, Sept. 2026, pp. 142-58, https://ejournal.unimap.edu.my/index.php/amci/article/view/2717.