A. M. Carvalho, A. N. Mendes, G. R. Carvalho, C. E. Botelho, F. A. Gonçalves, and A. D. Ferreira, “Correlation between growth and yield of coffee cultivars in different regions of the state of Minas Gerais, Brazil”, PAB, vol. 45, no. 3, pp. 269–275, Jan. 2011.