TUYEN, P. N. K.; DUY, L. H.; PHUNG, N. K. P. Four flavonoids from Hedyotis nigricans. Vietnam Journal of Chemistry, [S. l.], v. 48, n. 5, 2012. DOI: 10.15625/2175. Disponível em: https://vjs.ac.vn/index.php/vjchem/article/view/2175. Acesso em: 2 may. 2024.