@ARTICLE {689,
author={P.M. Girão and O. Postolache and J. M. Dias Pereira},
doi={10.1109/7361.983472},
journal={IEEE Sensors Journal},
title={An Overview and a Contribution to the Optical Measurement of Linear Displacement},
year={2001},
month={December},
volume={1},
number={4},
pages={322-331},
ISSN={1530-437X}
}