Corrêa, Juliano Corulli, et al. “Heavy Metal Exchangeable in an Oxisol With Surface Application of Flue Dust, Aqueous Lime, Sewage Sludge and Limestone”. Pesquisa Agropecuaria Brasileira, vol. 43, no. 3, Apr. 2014, pp. 411-9, doi:10.1590/S1678-3921.pab2008.v43.19525.