Banda R., J. et al. 2010. Effect of extenders based on Tris, Tes and skim milk on cryopreservation of epididymal alpaca sperm. Revista de Investigaciones Veterinarias del Perú. 21, 2 (Dec. 2010), 145–153. DOI:https://doi.org/10.15381/rivep.v21i2.129.