@article{382471,
      note = {Includes index.},
      author = {Porter, Thomas.},
      url = {http://library.usi.edu/record/382471},
      title = {Practical VoIP Security [electronic resource] /},
      publisher = {Syngress Publishing,},
      recid = {382471},
      pages = {xxviii, 563 p. :},
      address = {Rockland, MA :},
      year = {2006},
}