@article{lucas_serrano_2017,  title={Understanding and overcoming the “positive profits with negative surplus-value” paradox},  volume={37},  ISSN={0101-3157},  url={https://doi.org/10.1590/0101-31572017v37n03a07},  DOI={10.1590/0101-31572017v37n03a07},  number={3},  journal={Brazilian Journal of Political Economy},  publisher={Centro de Economia Política},  author={LUCAS, GUSTAVO DAOU and SERRANO, FRANKLIN},  year={2017},  month={Jul},  pages={587–604} }