Vieira, R.F. et al. 2005. Availability of soil nutrients, quality of grains and yield of soybean in soil treated with sewage sludge. Pesquisa Agropecuaria Brasileira. 40, 9 (Sep. 2005), 919–926. DOI:https://doi.org/10.1590/S1678-3921.pab2005.v40.7045.