@ARTICLE{6144043,
  author={Kantarci, Burak and Mouftah, Hussein T.},
  journal={IEEE Transactions on Reliability}, 
  title={Availability and Cost-Constrained Long-Reach Passive Optical Network Planning}, 
  year={2012},
  volume={61},
  number={1},
  pages={113-124},
  doi={10.1109/TR.2011.2182400}}