KAMAL, A.; AHMAD, F.J.; AHMAD, S.; SALEEM, K. A Validated HPLC Method for the Quantification of Hypericin in Hypericum perforatum. Asian Journal of Chemistry, [S. l.], v. 24, n. 10, p. 4689–4692, 2012. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/9601. Acesso em: 22 jul. 2024.