@INPROCEEDINGS {13320,
author={P. Gomes and F. V. Vieira and M.  Ferreira},
doi={0},
booktitle={ACM International Workshop on VehiculAr Inter-NETworking - VANET},
title={Sustainable Highways with Shadow Tolls based on VANET Advertising},
year={2013},
month={June},
volume={0},
pages={0-0} 
}