1. During the Reagan Administration for example there was an attempt to block presentation of 100 unclassified papers at an optical-engineering meeting in San Diego—an effort that was abandoned when contested. “Academic freedom: Secrets and lies ” Economist (March 9) 75 (2002).
2. Scientific Communication and National Security: A Report Prepared by the Panel on Scientific Communication and National Security Committee on Science Engineering and Public Policy National Academy of Sciences National Academy of Engineering and Institute of Medicine (National Academy Press Washington DC 1982).
3. National Security Decision Directive no. 189 “National policy on the transfer of scientific technical and engineering information ” 21 September 1985.
4. Executive Order no. 12958 “Classified national security information ” 17 April 1995.
5. Rice C. Brown H. Letter from Cochairman Center for Strategic and International Studies 1 November 2001.