Nguyen, N. H., N. M. Phan, T. T. T. NGUYEN, T. D. LE, T. P. Nguyen, D. T. Mai, K. P. P. Nguyen, and Q. L. Ngo. “Isolation and Characterization of Three Natural Compounds from the Stem Bark of Cassia Grandis L.f”. CTU Journal of Innovation and Sustainable Development, no. 03, Aug. 2016, pp. 57-60, doi:10.22144/ctu.jen.2016.024.