Calixto, M.C. et al. 2004. Somatic hybridization between Citrus sinensis (L.) Osbeck and C. grandis (L.) Osbeck. Pesquisa Agropecuaria Brasileira. 39, 7 (Jul. 2004), 721–724. DOI:https://doi.org/10.1590/S1678-3921.pab2004.v39.6831.