Truong Nguyen, A., T. Minh Thi Le, V. Quoc Tran, V. Ngoc Truong, L. Thanh Nguyen, P. H. Tan Nguyen, and T. H. Thi Nguyen. “Effect of Oxygen States in Horizontal Subsurface Flow Constructed Wetlands on the Removal of Organic Matter, Nutrients, Some Metals and Octylphenol”. Science and Technology Development Journal, Vol. 20, no. K9, Apr. 2019, pp. 45-52, doi: