@INPROCEEDINGS {7413,
author={F. Nunes and F. Sousa and J. Leitão},
doi={},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Performance Analysis of Altimeter-Aided GNSS Receiver for Indoor Scenarios},
year={2009},
month={May},
volume={1},
pages={1-4} 
}