G. Sifuentes-Penagos, S. León-Vásquez, and L. M. Paucar-Menacho, “Study of Maca (Lepidium meyenii Walp.), Andean crop with therapeutic properties”, Sci. agropecu, vol. 6, no. 2, pp. 131–140, Jun. 2015, doi: 10.17268/sci.agropecu.2015.02.06.