Private Keyword-Based Push and Pull with Applications to Anonymous Communication.

Lea Kissner Alina Oprea Michael K. Reiter Dawn Xiaodong Song Ke Yang Private Keyword-Based Push and Pull with Applications to Anonymous Communication. 16-30 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3089&spage=16 2004 conf/acns/2004 ACNS db/conf/acns/acns2004.html#KissnerORSY04