Filho, Francisco Carlos, et al. “Agronomic and Technological Evaluation of Sugar Cane Varieties in the Cariri Region of Ceará State, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 21, no. 2, Apr. 2014, pp. 155-63, doi:10.1590/S1678-3921.pab1986.v21.14682.