Ferrão, R.G. et al. 1994. Evaluation of the combining ability of twenty maize lines in a partial diallel cross. Pesquisa Agropecuaria Brasileira. 29, 12 (Dec. 1994), 1933–1939. DOI:https://doi.org/10.1590/S1678-3921.pab1994.v29.4251.