Mukdaharn, S. and Dumrongchai, P. (2020) “Improvement of Local Geoid Model in Thailand Using Residual Terrain Model and Terrestrial Gravities”, Science and Engineering Connect. Bangkok, Thailand, 43(4), pp. 505–516. available at: https://ph04.tci-thaijo.org/index.php/SEC/article/view/10689 (accessed: 18 July 2025).