@article{tsallis_2002,  title={Nonextensive statistical mechanics: a brief review of its present status},  volume={74},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652002000300003},  DOI={10.1590/S0001-37652002000300003},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={TSALLIS, CONSTANTINO},  year={2002},  month={Sep},  pages={393–414} }