Spyware : what you don't know can hurt you : hearing before the Subcommittee on Commerce, Trade, and Consumer Protection of the Committee on Energy and Commerce, House of Representatives, One Hundred Eighth Congress, second session, April 29, 2004.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2004.
Also available via Internet from the GPO Access web site. Address as of 4/4/05: http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=108%5Fhouse%5Fhearings&docid=f:93308.pdf; current access available via PURL.