Phanomsophon, T. ., N. . Jaisue, N. . Tawinteung, L. . Khurnpoon, and P. . Sirisomboon. “Classification of N, P, and K Concentrations in Durian (Durio Zibethinus Murray CV. Mon Thong) Leaves Using Near-Infrared Spectroscopy”. Engineering and Applied Science Research, vol. 49, no. 1, Aug. 2021, pp. 127-32, https://ph01.tci-thaijo.org/index.php/easr/article/view/245218.