@inproceedings{Per-2000,
    author={Jérôme Perez },
    title={Analytical Results for Distributions Functions and 
           Gravitational Potential for 3D and 2D Stellar Systems },
    booktitle={Astronomische Gesellschaft Meeting Abstracts },
    year={2000 },
    month={3},
    publisher={International Conference of the Astronomische Gesellschaft at 
           Heidelberg },
}