Moura, Ivan César Furmann, et al. “Performance of Purunã Beef Calves Subjected to Different Weaning Systems”. Semina: Ciências Agrárias, vol. 35, no. 4Supl, Sept. 2014, pp. 2711-22, doi:10.5433/1679-0359.2014v35n4Suplp2711.