@article{carneiro_irffi_2017,  title={The dynamic intensity of CO <sub>2</sub> emissions: empirical evidence for the 20 <sup>th</sup> century},  volume={37},  ISSN={0101-3157},  url={https://doi.org/10.1590/0101-31572017v37n04a07},  DOI={10.1590/0101-31572017v37n04a07},  number={4},  journal={Brazilian Journal of Political Economy},  publisher={Centro de Economia Política},  author={CARNEIRO, DIEGO and IRFFI, GUILHERME},  year={2017},  month={Oct},  pages={772–788} }