Thuy, Duong Thi, Ho Tu Cuong, Dang Dinh Kim, and Le Thi Phuong Quynh. “Variation in Microcytin Concentrations in Water Environment of the Hoan Kiem Lake”. Academia Journal of Biology 34, no. 1 (March 31, 2012): 94–98. Accessed August 16, 2022. https://vjs.ac.vn/index.php/vjbio/article/view/675.