@INPROCEEDINGS {11829,
author={L. P. Pontes and A. M. Miranda and S. M. Marques and J. Sanguino},
doi={},
booktitle={International Caris Conf.},
title={Aspects of the Development of a Vessel Traffic System for the Port of Sines},
year={1998},
month={September},
volume={--},
pages={-----} 
}