Rondón, A., J. González, M. Rodríguez, G. Milián, M. Martínez, A. Beruvides, A. Valdivia, and R. Vera. “In Vitro Metabolic Activity of Lactobacillus Salivarius and Its Effect on Productive and Health Indicators of Lactating Calves”. Cuban Journal of Agricultural Science, vol. 54, no. 2, June 2020, https://cjascience.com/index.php/CJAS/article/view/957.