@ARTICLE{Li:PVEA:IEEETCASVT2007,
  author =       {Shujun Li and Guanrong Chen and Albert Cheung and Bharat Bhargava and Kwok-Tung Lo},
  title =        {On the Design of Perceptual {MPEG}-Video Encryption Algorithms},
  journal =      {IEEE Transactions on Circuits and Systems for Video Technology},
  year =         {2007},
  volume =       {17},
  number =       {2},
  pages =        {214-223},
  doi =          {10.1109/TCSVT.2006.888840},
  note =         {preprint available online at \url{http://www.hooklee.com/pub.html}},
}