Jaitum , N., and S. Pailoplee. “Susceptibility Investigation of Debris Flow Hazard Using Topographic Index in the Nakhon Si Thammarat, Southern Thailand”. Bulletin of Earth Sciences of Thailand, vol. 14, no. 1, June 2022, pp. 80-91, https://ph01.tci-thaijo.org/index.php/bestjournal/article/view/248783.