1The International Intellectual Property Alliance()(IIPA()).Copyright Industries in the U.S.Economy:The 2003-2007 Report.June 2009[EB/OL].http://www.iipa.com/pdf/IIPASiwekReport2003-07.pdf.
2The International Intellectual Property Alliance (IIPA).Copyright Industries in the U.S. Economy:The 2003 -2007 Report [EB/OL].June,2009,http://www.iipa. com/pdf/IIPASiwekReport2003-07.pdf.