Chaipong, S. ., and C. . Wachrinrat. “Agroforestry Indices Modeling for Sustainable Land Use Classification in Huai Raeng-Khlong Peed Watershed, Trat Province, Thailand”. Agriculture and Natural Resources, vol. 48, no. 4, Aug. 2014, pp. 548-59, https://li01.tci-thaijo.org/index.php/anres/article/view/243380.