M.  Vassallo-Barco, Vives-Garnique, L., Tuesta-Monteza, V., Mejía-Cabrera, H. I., and Toledo, R. Y., ?Automatic detection of nutritional deficiencies in coffee tree leaves through shape and texture descriptors?, Journal of Digital Information Management, vol. 15, no. 1, pp. 7 - 18, 2017.