KUMAR, K.; MISHRA, J. P.; SINGH, R. P. Anti-cancer efficacy and mechanisms of usnic acid. Indian Journal of Pharmaceutical and Biological Research, [S. l.], v. 7, n. 03, p. 1–4, 2019. DOI: 10.30750/ijpbr.3.3.1. Disponível em: https://ijpbr.in/index.php/IJPBR/article/view/975. Acesso em: 23 aug. 2026.