@ARTICLE {4369,
author={E. S. Pires Pires and L.  Mendes and P. B. Oliveira and J. A. Machado and J. Vaz and M.  Rosário},
doi={},
journal={Lecture Notes in Computer Science},
title={Design of Radio-Frequency Integrated CMOS Discrete Tuning Varactors Using the Particle Swarm Optimization Algorithm},
year={2009},
month={June},
volume={--},
number={5518},
pages={1231-1239},
ISSN={0302-9743}
}