“Spatio-Temporal Analysis of Built-Up Land Expansion in Central Kotamobagu Using NDBI and Google Earth Engine”. Georhexis: Journal of Environmental, Disaster and Geospatial Studies, vol. 1, no. 1, April 2026, hlm. 34-44, https://ejournalfish.unima.ac.id/index.php/georhexis/article/view/104.