@INPROCEEDINGS {3398,
author={J. P. M. Martins and N.B.C. Carvalho and J. C. Pedro},
doi={},
booktitle={Asia Pacific Microwave Conf. - APMC},
title={Practical Multitone Amplitude and Phase Characterization},
year={2005},
month={December},
volume={5},
pages={3055-3058} 
}