L. Nguyen Thuy, H. Nguyen Thi Thu, T. Nguyen Thien Phuong, and V. Pham Quang, “Assessing trophic status of Suoi Hai Reservoir using Carlson’s Trophic State Index”, Vietnam J. Earth Sci., vol. 43, no. 4, pp. 509–523, Sep. 2021.