No evidence of antiprotozoal property of asteracid weeds Sphaeranthus indicus Linn. Journal of Pharmaceutical Negative Results, [S. l.], v. 3, n. 1, p. 46–48, 2012. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/50.. Acesso em: 7 jun. 2026.