Pereira, Rodrigo Moura, et al. “Sugarcane Leaf Area Estimate Obtained from the Corrected Normalized Difference Vegetation Index (NDVI)”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 46, no. 2, June 2016, pp. 140-8, https://doi.org/10.5216/pat.v46i2.39303.