Thi Hoang Yen, Tran, Thai, Tran, Van Tu, Nguyen, Xuan Quang, Ngo, AND Thanh Luu, Pham. " Environmental Factors Influencing Chlorophyll-a Concentration in Tri An Reservoir, Vietnam" VNU Journal of Science: Earth and Environmental Sciences [Online], Volume 37 Number 2 (26 June 2021)