@ARTICLE {2697,
author={Ramos, P.M. and Dias Pereira, J. M. and Ramos, H. G. and Ribeiro, A. L. },
journal={IEEE Trans. on Instrumentation and Measurement},
title={A four terminal water quality monitoring conductivity sensor},
year={2008},
month={March},
volume={57},
number={3},
pages={577-583},
ISSN={0018-9456},
}