Nguyen, Son, Trinh Duong, Phuong Nguyen, and Nhu Le. 2015. “Reduction of Graphene Oxide by TiO2 Nanotubes Photocatalyst”. Science and Technology Development Journal 18 (2), 228-36. https://doi.org/https://doi.org/10.32508/stdj.v18i2.1188.