@ARTICLE {1369,
author={N.B.C. Carvalho and J. C. Pedro},
doi={10.1002/mmce.20091},
journal={Intrnl. Journal of RF and Microwave Computer-Aided Engineering},
title={Nonlinear simulation of mixers for assessing system-level performance },
year={2005},
month={July},
volume={15},
number={4},
pages={350-361},
ISSN={1096-4290}
}