Suphavimonphan, M., S. Thanamai, and N. Tangtham. “Animal Behaviors Implying to Mudflow Event as Observed by Local People in Thapla District, Uttaradit Province”. Kasetsart Journal of Social Sciences, vol. 31, no. 2, Aug. 2010, pp. 245-54, https://so04.tci-thaijo.org/index.php/kjss/article/view/246676.