Lorenzetti, Eloisa, et al. “Development and Validation of a Diagrammatic Scale for Quantifying Maize Leaf Spots Caused by Diplodia Macrospora”. Semina: Ciências Agrárias, vol. 40, no. 6, Aug. 2019, pp. 2475-86, doi:10.5433/1679-0359.2019v40n6p2475.