Oliveira, Priscila Silva, et al. “Population Structure of a Closed Herd of Nellore Cattle of the Lemgruber Line”. Pesquisa Agropecuaria Brasileira, vol. 46, no. 6, Aug. 2011, pp. 639-47, doi:10.1590/S1678-3921.pab2011.v46.9820.