XIONGTOUA, T., CHANTHAVONE, T., KINGSADA, Y., THAMMAVONG , V. and SOULISACK, S. (2020) “Evaluation of Economic Values of the 1st Plain of Jars Tourist Attraction in Xiengkhouang Province”, Souphanouvong University Journal Multidisciplinary Research and Development , 6(2), pp. 137–148. Available at: http://www.su-journal.com/index.php/su/article/view/274 (Accessed: 17 January 2026).