Restle, J. et al. 1999. Breed and heterosis effect on age and weight at puberty and reproductive performance of beef heifers. Pesquisa Agropecuaria Brasileira. 34, 4 (Apr. 1999), 701–707. DOI:https://doi.org/10.1590/S1678-3921.pab1999.v34.5219.