Stivanin, Sheila Cristina Bosco, et al. “Biomass Flows and Defoliation Pattern of Ryegrass Grazed by Supplemented Heifers”. Semina: Ciências Agrárias, vol. 38, no. 5, Oct. 2017, pp. 3193-02, doi:10.5433/1679-0359.2017v38n5p3193.