Musikarun, R., C. Chonpairoj, and P. Khampang. “Study of Acoustics and Performance Practice of Thai Saw Sam Sai and Cambodian Tro Khmer”. Rangsit Music Journal, vol. 14, no. 2, July 2019, pp. 103-17, https://so06.tci-thaijo.org/index.php/rmj/article/view/204563.