@INPROCEEDINGS {641,
author={J. R. Rodrigues and M. Freire},
doi={},
booktitle={IEEE International Conf. on Information Networking - ICOIN},
title={Performance Analysis of Degree Four Topologies for the Optical Core of IP-over-WDM Networks},
year={2003},
month={February},
volume={I},
pages={75-84} 
}