S. Mawati, A. P. Adi, Soedarsono, and Sunarso, “Effect of Feed with Different Energy-protein Ratios on Parameters of Sheep Ruminal Fermentation”, Pak. J. Nutr., vol. 15, no. 12, pp. 1055–1060, Nov. 2016, doi: 10.3923/pjn.2016.1055.1060.