Le, Q. H., T. N. Nguyen, T. H. Bui, C. H. Nguyen, T. A. D. Le, H. M. Do, and T. L. Le. “Determination of Essential Element and Titanium Contents in Rocks Using Flame Atomic and Molecular Absorption Spectrometry”. Journal of Technical Education Science, vol. 17, no. 6, Dec. 2022, pp. 46-53, doi:10.54644/jte.73.2022.1207.