6Gonzales G F. Ethnobiology and ethnopharmacology oilepidium meyenii ( Maca),a plant from the peruvian highlands[J]. Evidence -Based Complementary and Alternative Medicine,2012,2012:10.
7C16menta C, Kneubtihlerb J, Urwylerb A, et al. Effect of maca supplementation on bovine sperm quantity and quality followed over two spermatogenic cycles[J]. The- riogenology, 2010, 74: 173-183.
8Zhang Y Z, Yu L J, Ao M Z, et al. Effect of ethanol extract of Lepidium meyenii Walp on osteoporosis in ovariectomized rat[J]. Journal of Ethnopharmacology, 2006, 105: 274-279.
9Choi E H, Cho J Y, Lee S H, et al. Supplementation of standardized lipid-soluble extract from maca (Lepidium meyenii) increases swimming endurance capacity in rats [J]. Journal of Function Foods, 2012, 4.. 568-573.
10Zheng B L, He K, Kim C H, et al. Effect of a lipidic extrace from Lepidium meyenii on sexual behavior in mice and rats[J]. Urology, 2000, 55.. 598-602.