Thamsutiwat, S., and N. Wang. “Policy and guidelines related to commercial navigation regulations on the Mekong river: a case study of Yunnan province (Thai)”. Asia-Pacific Journal of Science and Technology, vol. 15, no. 6, Apr. 2017, pp. 552-8, https://so01.tci-thaijo.org/index.php/APST/article/view/83238.