Phan, Nhat, Van Truong, Son Le, Biec Ha, and Dan Nguyen. “Partial Nitritation Treating Nitrogen in Old Landfill Leachate”. Science and Technology Development Journal 19, no. 4 (December 31, 2016): 39-49. Accessed May 7, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/592.