Dynia, J. F., Souza, M. D. de and Boeira, R. C. (2006) “Nitrate leaching in a Typic Haplustox planted with mayze after successive applications of sewage sludge”, Pesquisa Agropecuaria Brasileira, 41(5), pp. 855–862. doi: 10.1590/S1678-3921.pab2006.v41.7216.