Le, Thi Trang, Luong, Quang Doc, Vo, Thi Thu Ha, AND Nguyen, Van Tu. "A case study of phytoplankton used as a biological index for water quality assessment of Nhu Y river, Thua Thien - Hue" Vietnam Journal of Science, Technology and Engineering [Online], Volume 60 Number 4 (17 December 2018)