Investigation of Antioxidant Compositions and Antioxidative Activities of Ethanol Extract of Alstonia boonei Stem Bark. Nigerian Journal of Pharmaceutical Research, [S. l.], v. 16, n. 1, p. 71–80, 2020. DOI: 10.4314/njpr.v16i1.10. Disponível em: https://ojshostng.com/index.php/njpharmaceuticalsciences/article/view/895. Acesso em: 6 feb. 2026.