@ARTICLE {1624,
author={N.B.C. Carvalho and J. C. Pedro},
doi={10.1109/TMTT.2005.862713},
journal={IEEE Transactions on Microwave Theory and Techniques},
title={Nonlinear RF circuits and systems simulation when driven by several modulated signals},
year={2006},
month={February},
volume={54},
number={2},
pages={572-579},
ISSN={0018-9480}
}