@article{bellandi_guzzo_aquino_1997,  title={On Resonances and Mixing Angles in Three Neutrino Oscillations in Matter},  volume={27},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97331997000300008},  DOI={10.1590/S0103-97331997000300008},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Bellandi, J. and Guzzo, M.M. and Aquino, V.M.},  year={1997},  month={Sep},  pages={384–391} }