@book{ BD09136517, author = "ACM Workshop on Multimedia Content Protection and Security and ACM SIG Multimedia and Association for Computing Machinery. Special Interest Group on Computer Graphics", title = "ACM Workshop on Multimedia Content Protection and Security : MCPS 2006 : October 23-27, 2006, Santa Barbara, California, USA", publisher = "Association for Computing Machinery,Printed from e-media with permission by Curran Associates", year = "2006", URL = "https://ci.nii.ac.jp/ncid/BD09136517" }