@article{oliveira-neto_sousa_2008,  title={Qualitative and quantitative features of orbits of massive particles and photons moving in wyman geometry},  volume={38},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332008000500008},  DOI={10.1590/S0103-97332008000500008},  number={4},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Oliveira-Neto, G. and Sousa, G. F.},  year={2008},  month={Dec},  pages={573–580} }