@INPROCEEDINGS {1515,
author={O. Postolache and J. M. Dias Pereira and P.M. Girão and H.  Ramos},
doi={},
booktitle={Conf. on Electronic Measurement & Instruments - ICEMI},
title={Smart Wireless System for Pollution of Rivers and Estuaries},
year={2003},
month={August},
volume={2},
pages={1139-1143} 
}