M. K. Harahap, S. Efendi, Amalia, and T. H. F. Harumy, “Optimized Gaussian Process Regression for Multimodal Spatio-Temporal Prediction of Alzheimer’s Disease Progression”, Eng. Technol. Appl. Sci. Res., vol. 16, no. 1, pp. 31907–31915, Feb. 2026.