Yeongyun Kim Sung Ho Jin Yong Man Ro Scalable Security and Conditional Access Control for Multiple Regions of Interest in Scalable Video Coding. 71-86 2007 IWDW http://dx.doi.org/10.1007/978-3-540-92238-4_7 conf/iwdw/2007 db/conf/iwdw/iwdw2007.html#KimJR07