Souza, José Gomes de, et al. “Use of Diploid Species of Gossypium in Studies and Breeding of Tetraploid Cotton for Drought Resistance”. Pesquisa Agropecuaria Brasileira, vol. 26, no. 2, Feb. 1991, pp. 289-95, https://doi.org/10.1590/S1678-3921.pab1991.v26.3341.