Yang Liu Chun Yuan Yuzhuo Zhong Implementing Digital Right Management in P2P Content Sharing System. 348-355 2007 conf/ica3pp/2007 ICA3PP http://dx.doi.org/10.1007/978-3-540-72905-1_31 db/conf/ica3pp/ica3pp2007.html#LiuYZ07