“Factors Affection Degradation of Barley Straw in Sacco and Microbial Activity in the Rumeo of Cows Fed Fibre-Rich Diets. LII. The Amount of Supplemental Energy”. Semiárida, vol. 10, no. 1, May 2020, p. 52, https://cerac.unlpam.edu.ar/ojs/index.php/semiarida/article/view/4783.