Perotto, D. et al. 2000. Heterosis upon weights in Canchim and Aberdeen Angus calves and in their reciprocal crosses. Pesquisa Agropecuaria Brasileira. 35, 12 (Dec. 2000), 2511–2520. DOI:https://doi.org/10.1590/S1678-3921.pab2000.v35.6048.