Martins, L. M., E. da S. Neiro, A. R. Dias, C. G. Roque, F. H. Rojo Baio, and P. E. Teodoro. “Cotton Vegetation Indices under Diffentent Control Methods of Ramularia Leaf Spot”. Bioscience Journal, vol. 34, no. 6, Dec. 2018, pp. 1706-13, doi:10.14393/BJ-v34n6a2018-39975.