Sinaga, H., Hartomo, K.D. and Prasetyo, S.Y.J. (2026) “Development of a Composite Eutrophication Proxy Index (CEPI) Using Sentinel-2 GeoAI Time-Series for Lake Toba”, International Journal of Advances in Data and Information Systems, 7(2), pp. 687–699. doi:10.59395/ijadis.v7i2.1596.