2U.S. Department of Justice and the Federal Trade commission. Antitrust Guidelines for the LiCensing of Intellectual Property [OL].[2007-7-15].http:/ /www.usdoj.gov/ atripublic/guidelines/ipguide.htm.
3U.S. Department of Justice and the Federal Trade commission.MPEG LA Business Review Letter[OL].[2007-7-15].http://www.usdoj.gov/atr/public/busreview/1170.htm.
4U.S. Department of Justice and the Federal Trade commission DVD 3C Business Review Letter[OL].[2007-7-15].http://www.usdoj.gov/atr/public/busreview/2121.htm.
5U.S. Department of Justice and the Federal Trade commission DVD 6C Business Review Letter[OL]. [2007-7-15].http://www.usdoj.gov/atr/public/busreview/2485.htm.
