Valdivia, A. L., M. Matos, S. Martínez, Y. Pérez, Y. Rubio, and J. Vega. “Enzymatic Additives and Their Use on Animal Rearing”. Cuban Journal of Agricultural Science, vol. 53, no. 4, Dec. 2019, https://cjascience.com/index.php/CJAS/article/view/926.