Alvito, Fahri Dean, Zulfikar Adlan Nadzir, and Misfallah Nurhayati. “Refining the Indonesian Geoid Model: A Comparative Study of Global Geopotential Models in East Kalimantan”. Geoid 20, no. 2 (September 5, 2025): 9–21. Accessed March 25, 2026. https://journal.its.ac.id/index.php/geoid/article/view/3068.