Yen, N. T., P. T. T. Huong, T. T. Thuy, and P. V. Thanh. “Trademark Protection from Legal Perspective: Case Study on Vietnamese Enterprises”. The International Journal of Business & Management, vol. 5, no. 8, Aug. 2017, https://internationaljournalcorner.com/index.php/theijbm/article/view/124383.