Hải, Nguyễn Trung, Nguyễn Việt Hùng, and Nguyễn Văn Hợp. 2019. “Eutrophication Concern: A Case Study on Several Lakes in Dong Ha City”. Hue University Journal of Science: Natural Science 128 (1C):63-68. https://doi.org/10.26459/hueuni-jns.v128i1C.5450.