@INPROCEEDINGS {8719,
author={A. Matos and J. Girão and S. Sargento and R.  Aguiar},
doi={},
booktitle={IEEE Global Communications Conference - GLOBECOM},
title={Preserving privacy in mobile envinronments},
year={2007},
month={November},
volume={0},
pages={0-0} 
}
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