@INPROCEEDINGS {28119,
author={M. C. R.  Medeiros and N.S.C. Correia},
doi={10.1109/ICECS.1998.814839},
booktitle={IEEE Conf. on Electronics, Circuits and System},
title={Optimization of WDM multihop logical topologies},
year={1998},
month={September},
volume={2},
pages={91-94} 
}