Piwpong, R., P. Sujayanont, J. Jundaeng, J. Krates, R. Kijphati, and C. Nithikathkul. “Applications of GIS in Analyzing Health Disparities Among the Elderly and Health Center Service Area Coverage: Community Model, Lahansai District, Buriram, Thailand”. International Journal of Geoinformatics, vol. 21, no. 4, Apr. 2025, pp. 131-48, doi:10.52939/ijg.v21i4.4075.