@INPROCEEDINGS {4899,
author={J. M. Dias Pereira and O. Postolache and P.M. Girão},
doi={},
booktitle={IEEE Instrumentation and Measurement Technology Conf.},
title={A Smart and Portable Solution for Heavy Metals Concentration Measurements              },
year={2007},
month={May},
volume={CD},
pages={100-105} 
}