Cristina Abad Indranil Gupta William Yurcik Adding Confidentiality to Application-Level Multicast by Leveraging the Multicast Overlay. 5-11 2005 conf/icdcsw/2005 ICDCS Workshops http://doi.ieeecomputersociety.org/10.1109/ICDCSW.2005.32 db/conf/icdcsw/icdcsw2005.html#AbadGY05