HIEN, Le Xuan; VUONG, Nguyen Thien; VIET TRIEU, Nguyen Thi; THUONG, Ngo Hanh. {"en_US":"Untitled"}. <b>Vietnam Journal of Science and Technology</b>, Hanoi, VN, v. 53, n. 5, p. 663, 2015. DOI: 10.15625/0866-708X/53/5/5090. Disponível em: https://vjst.vast.vn/jst/article/view/5090. Acesso em: 17 apr. 2026.