@article{navas_bentes_2021,  title={Reviewing Optimized Portfolios: All Seasons Strategy},  volume={23},  ISSN={1806-4892},  url={https://doi.org/10.7819/rbgn.v23i4.4134},  DOI={10.7819/rbgn.v23i4.4134},  number={4},  journal={Revista Brasileira de Gestão de Negócios},  publisher={Fundação Escola de Comércio Álvares Penteado},  author={Navas, Raúl D. and Bentes, Sónia R.},  year={2021},  month={Oct},  pages={696–713} }