Ultraviolet spectrophotometric method: Not possible for the simultaneous estimation of active constituents in Phyllanthus amarus. Journal of Pharmaceutical Negative Results, [S. l.], v. 8, n. 1, p. 2–6, 2017. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/105.. Acesso em: 6 jun. 2026.