1. Home Video: A Repd on the Status. Projected Development and Consumer Use of Videocassette Recorders and Videodisc Players in the United States,1980
2. Diary Study of Television and Video Recorder Actioity;Media Statistics Inc,, 1979
3. Report No. 94–1476 Copyright Law Revision. 94th Congress, 2nd Session;US. House,3, 1976