Joycharat, N., D. Thammanee, N. Phrommachan, S. Trimanee, T. Poongern, C. Sontimuang, and S. Limsuwan. “ Schum”. KKU Science Journal, vol. 45, no. 1, Mar. 2017, pp. 68-82, https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/249664.