Nguyen, Du, Dong Nguyen, Nhung Nguyen, Luyen Nguyen, and Mai Nguyen. “IMPROVEMENT OF AMINO ACID DETERMINING METHOD”. Science and Technology Development Journal 14, no. 4 (December 30, 2011): 27-35. Accessed May 7, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2045.