Teerarojanarat, Sirivilai, Kalaya Tingsabadh, and Phinnarat Akharawatthanakun. 2026. “A GIS-Based Study of Spatial Patterns in the Changes in Lexical Usage at the Level of Individual Semantic Units in Northeastern Thailand: Integrating Geography and Linguistic Techniques”. Journal of Mekong Societies 22 (1):1-22. https://so03.tci-thaijo.org/index.php/mekongjournal/article/view/283882.