@INPROCEEDINGS {2442,
author={H.  Ramos and P.M. Girão and O. Postolache and J. M. Dias Pereira},
doi={},
booktitle={IEEE AFRICON Conf. in Africa},
title={Distributed Water Quality Measurement System Based on SDI-12},
year={2004},
month={September},
volume={01},
pages={57-60} 
}