Trung, Hoang Dinh. “A Preliminary Study on Species Composition of Zoobenthos on the Lower Section of Hieu River, Quang Tri Province”. Academia Journal of Biology 34, no. 3 (October 2, 2012): 309–316. Accessed October 22, 2021. https://vjs.vjs.ac.vn/index.php/vjbio/article/view/2461.