@article{batista_alves_2021,  title={Analysis of Bitcoin’s Impact on the Efficiency of a Diversified Portfolio for Brazilian Investors},  volume={23},  ISSN={1806-4892},  url={https://doi.org/10.7819/rbgn.v23i2.4098},  DOI={10.7819/rbgn.v23i2.4098},  number={2},  journal={Revista Brasileira de Gestão de Negócios},  publisher={Fundação Escola de Comércio Álvares Penteado},  author={Batista, Davi Trindade and Alves, Carlos F.},  year={2021},  month={Jun},  pages={353–369} }