@article{oliveira_2012,  title={"Rio +20: what we can learn from the process and what is missing"},  volume={10},  ISSN={1679-3951},  url={https://doi.org/10.1590/S1679-39512012000300003},  DOI={10.1590/S1679-39512012000300003},  number={3},  journal={Cadernos EBAPE.BR},  publisher={Fundação Getulio Vargas, Escola Brasileira de Administração Pública e de Empresas},  author={Oliveira, Jose A. Puppim de},  year={2012},  month={Sep},  pages={492–507} }