@ARTICLE {6971,
author={A. L. Ribeiro and H.  Ramos and J. C. Gonçalves},
doi={10.1016/j.measurement.2012.04.025},
journal={Measurement},
title={Liftoff insensitive thickness measurement of aluminum plates using harmonic eddy current excitation and a GMR sensor},
year={2012},
month={April},
volume={45},
number={2012},
pages={2246-2253},
ISSN={0263-2241}
}