Callacondo-Riva, David, Angel Quispe-Mauricio, Selamir Lindo-Gamarra, and Abraham J. Vaisberg. “Cytotoxic Activity of an Ethanolic Extract of Gnaphalium Spicatum ‘keto Keto’ on Human Tumor Cell Lines”. Revista Peruana de Medicina Experimental y Salud Pública 25, no. 4 (December 30, 2008). Accessed May 2, 2024. https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/1301.