@ARTICLE {3810,
author={P. M. Ramos and F. M. Janeiro and M. Tlemçani  and A. Serra},
doi={10.1109/TIM.2009.2014512},
journal={IEEE Transactions on Instrumentation and Measurement},
title={Recent developments on  impedance measurements with DSP based ellipse fitting algorithms},
year={2009},
month={May},
volume={58},
number={5},
pages={1680-1689},
ISSN={0018-9456}
}