@proceedings{17993,
  author = {Shu-Fen Tu and Ching-Sheng Hsu},
  title = {A VC-Based Copyright Protection Scheme for Digital Images of Multi-Authorship},
  year = {2007},
  journal = {World Congress on Engineering, WCE 2007},
  month = {July 2 - 4, 2007},
  address = {London, U.K.},
  language = {eng},
}