@article{gusev_jayanthi_martin_pugacheva_spjeldik_2000,  title={On positron radiation belt in the Earth's magnetosphere},  volume={30},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332000000300017},  DOI={10.1590/S0103-97332000000300017},  number={3},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Gusev, A.A. and Jayanthi, U.B. and Martin, I.M. and Pugacheva, G.I. and Spjeldik, W.N.},  year={2000},  pages={590–593} }