Zeoula, Lúcia Maria, et al. “Total Digestibility and in Situ Degradability of Bulky Diets With the Inclusion of Ionophores or Probiotics for Cattle and Buffaloes”. Semina: Ciências Agrárias, vol. 35, no. 4, Aug. 2014, pp. 2063-76, doi:10.5433/1679-0359.2014v35n4p2063.