@INPROCEEDINGS {2479,
author={P. Monteiro and J. J. O.  Pires},
booktitle={IASTED International Conf. on Optical Communication Systems and Networks - OCSN},
title={Comparison of interconnection architectures for WDM multi-ring networks},
year={2004},
month={July},
volume={423},
pages={814-819} 
}