@article{salah2017analytical,
  title={Analytical Model for Elastic Scaling of Cloud-Based Firewalls},
  author={Salah, Khaled and Calyam, Prasad and Boutaba, Raouf},
  journal={IEEE Transactions on Network and Service Management},
  volume={14},
  number={1},
  pages={136--146},
  year={2017},
  publisher={IEEE}
}