Feldberg, Nelson Pires, et al. “Agronomic Performance of ’Crimson Seedless’ and ’Superior Seedless’ Vines in the North Region of Minas Gerais”. Pesquisa Agropecuaria Brasileira, vol. 42, no. 6, June 2007, pp. 777-83, doi:10.1590/S1678-3921.pab2007.v42.7630.