Huan, Nguyen Manh, Bui Duc Tai, and Ngo Thuy Phuong. 2016. “A Study on Preparation of Catalyst for Treatment of Mercaptan in Natural Gas by Hydrodesulfurisation Process ”. Petrovietnam Journal 1 (January), 54-64. https://pvj.vn/index.php/TCDK/article/view/473.