Aslihan Celik JoAnne Holliday Bindumadhavi Ramavarjula I-DG: A Secure Protocol for Disseminating Data to Subscribers via IP Multicast. 113-120 2002 WECWIS http://www.computer.org/proceedings/wecwis/1567/15670113abs.htm db/conf/wecwis/wecwis2002.html#CelikHR02