@article{oliveira_diniz_oliveira_2009,  title={Oxocarbonos, pseudo-oxocarbonos e esquaraínas},  volume={32},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422009000700038},  DOI={10.1590/S0100-40422009000700038},  number={7},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Oliveira, Vanessa E. de and Diniz, Renata and Oliveira, Luiz Fernando C. de},  year={2009},  pages={1917–1925} }