Study of alkaloids present in the vine of the saragoza (Aristolochia elegans). Revista Universidad de Guayaquil, [S. l.], v. 134, n. 1, p. 67–81, 2022. DOI: 10.53591/rug.v134i1.1418. Disponível em: https://revistas.ug.edu.ec/index.php/rug/article/view/149. Acesso em: 5 dec. 2025.