Astuti, Wulansih D., et al. “Effects of Selected Lactobacillus Plantarum As Probiotic on In Vitro Ruminal Fermentation and Microbial Population”. Pakistan Journal of Nutrition, vol. 17, no. 3, Feb. 2018, pp. 131–139, https://doi.org/10.3923/pjn.2018.131.139.