@INPROCEEDINGS {3662,
author={J. M. Dias Pereira and O. Postolache and P.M. Girão},
doi={},
booktitle={IEEE Instrumentation and Measurement Technology Conf.},
title={A Low-Cost Tide Measurement System for Water Quality Assessment},
year={2006},
month={April},
volume={1},
pages={2226-2230} 
}