HAKIM, Aliefman; JUFRI, A. Wahab. Natural Products Laboratory Project: Isolation and Structure Elucidation of Piperin from Piper nigrum and Andrographolide from Andrographis paniculata. Journal of Turkish Science Education, [S. l.], v. 15, n. 4, p. 15–28, 2018. Disponível em: https://www.tused.org/index.php/tused/article/view/247.. Acesso em: 18 may. 2024.