Oliveira, Ricardo Augusto de, et al. “LEAF AREA IN THREE SUGAR-CANE CULTIVARS AND ITS RELATIONSHIP WITH BIOMASS PRODUCTION”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 37, no. 2, Sept. 2007, pp. 71-76, https://doi.org/10.5216/pat.v37i2.1672.