@InProceedings{ZhangWG07,
  author = 	 {Charles C. Zhang and Marianne Winslett and Carl A. Gunter},
  title = 	 {On the Safety and Efficiency of Firewall Policy Deployment},
  booktitle = 	 {IEEE Symposium on Security and Privacy},
  address =      {Oakland CA},
  month =        {May},
  year = 	 {2007},
}