Sakphet, Norathep, Chatirot Jitrugtham, Wanida Petlamul, Vilerswat Noosaeng, Pikul Somjit, and Sanit Haruehansawasin. “Progressive Web Application Geographic Information System for Offline Spatial Data Collection: A Case Study of Robusta Coffee Disease and Pest Survey”. KKU Science Journal 54, no. 1 (February 17, 2026): 232–251. accessed August 29, 2026. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/262093.