@article{oliveira_melo_pereira_melo_melo_2005,  title={Heavy metals in Oxisols amended with biosolids and cropped with maize in a long-term experiment},  volume={62},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90162005000400012},  DOI={10.1590/S0103-90162005000400012},  number={4},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={Oliveira, Katarzyna Wójcik and Melo, Wanderley José de and Pereira, Gener Tadeu and Melo, Valéria Peruca de and Melo, Gabriel Maurício Peruca de},  year={2005},  month={Jul},  pages={381–388} }