@INPROCEEDINGS {9040,
author={J. Santos and J. M. Pedro and P. Monteiro and J. J. O.  Pires},
doi={},
booktitle={European Conf. on Networks and Optical Communications - NOC},
title={CAPEX Minimization in Optical Transport Networks with Heterogeneous Service Demands},
year={2010},
month={June},
volume={1},
pages={1-6} 
}