Neto, Augusto Tulmann, et al. “Mutant Selection and Induction in ’Pera’ Sweet Orange Using Gamma-Rays”. Pesquisa Agropecuaria Brasileira, vol. 31, no. 10, Oct. 1996, pp. 743-52, doi:10.1590/S1678-3921.pab1996.v31.4544.