@INPROCEEDINGS {24585,
author={H.  Ramos and O. Postolache and J. M. Dias Pereira and P.M. Girão},
doi={},
booktitle={International Conf. and Exposition on Electrical and Power Engineering  - EPE},
title={A LVDT-Based Vibration Meter},
year={1999},
month={November},
volume={5A},
pages={370-376} 
}