Lima, Carlos Rodrigues, et al. “Comparison Between Siratro Hay and Mixed Pasture of Pangolagrass and Centro for Economical Nursing of Crossbred Calves”. Pesquisa Agropecuaria Brasileira, vol. 8, no. 2, Apr. 2014, pp. 5-7, doi:10.1590/S1678-3921.pab1973.v8.17308.