Trieu, An, Mai Le, Nho Nguyen, and Dong Nguyen. “Preparation of Gold-Coated Sand for Ultratrace Mercury Analysis”. Science and Technology Development Journal 18, no. 2 (June 30, 2015): 211-220. Accessed May 6, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1186.