@article{abdalla_mohayaee_2001,  title={Gravitational clustering to all perturbative orders},  volume={31},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97332001000100007},  DOI={10.1590/S0103-97332001000100007},  number={1},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Abdalla, Elcio and Mohayaee, Roya},  year={2001},  month={Mar},  pages={42–44} }