MEGHRAJ SURYAWANSHI. Development and validation of HPLC method for estimation of betulinic acid. World Journal of Pharmaceutical Sciences, [S. l.], v. 8, n. 7, p. 1–5, 2020. Disponível em: https://www.wjpsonline.com/index.php/wjps/article/view/174. Acesso em: 27 jun. 2025.