Partelli, F. L.; Vieira, H. D.; Monnerat, P. H.; Viana, A. P. Comparison of Two DRIS Methods for Diagnosing Nutrients Deficiencies in Coffee Trees. PAB 2006, 41 (2), 301-306. https://doi.org/10.1590/S1678-3921.pab2006.v41.7137.