Cirne, Luis Gabriel Alves, et al. “Intake, Microbial Protein Synthesis, and Nitrogen Balance in Lambs Fed Diets Containing Mulberry Hay”. Semina: Ciências Agrárias, vol. 36, no. 6Supl2, Dec. 2015, pp. 4413-22, doi:10.5433/1679-0359.2015v36n6Supl2p4413.