@article{santos_2015,  title={The kimberley process certification system - KPCS and diamond production changes in selected African countries and Brazil},  volume={68},  ISSN={0370-4467},  url={https://doi.org/10.1590/0370-44672015680024},  DOI={10.1590/0370-44672015680024},  number={3},  journal={Rem: Revista Escola de Minas},  publisher={Escola de Minas},  author={Santos, Eduardo Gomes dos},  year={2015},  month={Jul},  pages={279–285} }