@INPROCEEDINGS {321,
author={N.B.C. Carvalho and J. C. Pedro},
doi={},
booktitle={European Microwave Conf. - EMC},
title={Simulating Strong Nonlinear Microwave Circuits Driven By a Large Number of Input Tones},
year={1997},
month={September},
volume={27},
pages={820-825} 
}