Douangmachanh, P., and V. Chansavang. “Study Asphalt Concrete Behavior Mixtures Using AC 6070 and PMA for Wearing Course”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 1, no. 1, June 2015, pp. 41-46, http://www.su-journal.com/index.php/su/article/view/7.