Souza, José Gomes de, et al. “Physiological Studies on Cotton. I. The Relative Importance of Different Leaves in the Fransfer of Assimilates”. Pesquisa Agropecuaria Brasileira, vol. 25, no. 12, Apr. 2014, pp. 1763-7, doi:10.1590/S1678-3921.pab1990.v25.13729.