Hiranmayee Subramaniam Rebecca N. Wright Zhiqiang Yang Experimental Analysis of Privacy-Preserving Statistics Computation. 55-66 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3178&spage=55 2004 conf/sdmw/2004 Secure Data Management db/conf/sdmw/sdmw2004.html#SubramaniamWY04