Keim, J., X. Valderrama, D. Alomar, and I. López. “ In Situ Rumen Degradation Kinetics As Affected by Type of Pasture and Date of Harvest ”. Scientia Agricola, Vol. 70, no. 6, Dec. 2013, pp. 405-14, doi:10.1590/S0103-90162013000600005.