@article{abdel-mageed_2010,  title={Variational calculation of low-energy positron life time in Xe atoms},  volume={40},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332010000100002},  DOI={10.1590/S0103-97332010000100002},  number={1},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Abdel-Mageed, Mahasen M.},  year={2010},  month={Mar},  pages={9–14} }