C. A. de Abreu, A. S. Lopes, and D. de S. Andrade, “Identification of micronutrients deficiencies in five lowland soils from the cerrado region of Minas Gerais”, PAB, vol. 22, no. 8, pp. 833–841, Apr. 2014, doi: 10.1590/S1678-3921.pab1987.v22.14884.