@INPROCEEDINGS {1341,
author={J. J. O.  Pires and J. M. Pedro},
doi={},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Efficient Routing and Wavelenght Assignment in WDM Shared Protection Rings},
year={2003},
month={June},
volume={},
pages={513-516} 
}