Stelios Sidiroglou John Ioannidis Angelos D. Keromytis Salvatore J. Stolfo An Email Worm Vaccine Architecture. 97-108 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3439&spage=97 2005 conf/ispec/2005 ISPEC db/conf/ispec/ispec2005.html#SidiroglouIKS05