Le, Quang Huy, Thanh Nho Nguyen, Trung Huu Bui, Cong Hau Nguyen, Thi Anh Dao Le, Huy Minh Do, and Thanh Long Le. 2022. “Determination of Essential Element and Titanium Contents in Rocks Using Flame Atomic and Molecular Absorption Spectrometry”. Journal of Technical Education Science 17 (6):46-53. https://doi.org/10.54644/jte.73.2022.1207.