Freitas Júnior, S. de P. et al. 2006. Combining ability in popcorn by circulant diallel. Pesquisa Agropecuaria Brasileira. 41, 11 (Nov. 2006), 1599–1607. DOI:https://doi.org/10.1590/S1678-3921.pab2006.v41.7322.