Nguyen , My Linh, Minh Nhat Phan, and Hoang Phi Hai Ngo. 2016. “Biosorption of Chromium (VI) from Aqueous Solutions by Modified Chitosan Beads”. Journal of Technical Education Science 11 (Special Issue 02):54-58. https://www.jte.edu.vn/index.php/jte/article/view/442.