Hendi, A., Sutarto, A.P., Herlambang, M.B. and Izzah, N. 2026. Interpretable Machine Learning for Mental Workload Detection: From Binary to Multi-Class with Multimodal Physiology Signals. Asia-Pacific Journal of Science and Technology. 31, 04 (Jul. 2026), APST–31. DOI:https://doi.org/10.22299/apst.2026.286080.