Pondthai, P., Arjwech, R., Mathon, K. and Taweelarp, S. (2023) “Investigation of Subsurface and Geological Structures Contributing to Collapse Sinkholes in Covered Karst Terrain, Northeast Thailand: 10.32526/ennrj/21/20230131”, Environment and Natural Resources Journal. Nakhon Pathom, Thailand, 21(6), pp. 513–523. available at: https://ph02.tci-thaijo.org/index.php/ennrj/article/view/249652 (accessed: 12 September 2026).