XIONGTOUA, T., and T. CHANTHAVONE. “Economic Evaluation of Waste Management in Luangprabang Capital Case Study Group of Ban WatThat”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 5, no. 2, July 2019, pp. 27-39, http://www.su-journal.com/index.php/su/article/view/74.