Chansavang, Vixay. “Culvert Outlet Problems, Access Road, Erosion – Protection, Oudomxay Province”. Souphanouvong University Journal Multidisciplinary Research and Development 3, no. 1 (July 1, 2017): 255–264. Accessed January 17, 2026. http://www.su-journal.com/index.php/su/article/view/41.