Abreu, C.A. de and Lopes, A.S. (2014) “Identification of macronutrients deficiencies in three lowland soils from Minas Gerais, Brazil”, Pesquisa Agropecuaria Brasileira, 22(11/12), pp. 1215–1224. doi:10.1590/S1678-3921.pab1987.v22.14688.