@INPROCEEDINGS {12158,
author={P. M. d´Orey and R. Fernandes and M.  Ferreira},
doi={10.1109/ITST.2012.6425191},
booktitle={IEEE International Conf. on ITS Telecommunications  - ITST},
title={Reducing the Enviornmental impact of Taxi Operation: the Taxi-Sharing Use Case},
year={2012},
month={November},
volume={1},
pages={319-323} 
}