"Verifying the Integrity of Audio and Videotapes" - Champion - July 1993 by Steve Cain

"Authentication of Sound Recordings for Evidentiary Purposes" 1994 American Academy of Forensic Sciences by Steve Cain and Michael Chial Ph.D.

"AES - 43-2000" - Criteria for the authentication of analog audio tape recordings Audio Engineering Society, Inc. January/February 1990 by Michael C. McDermott and Tom Owen

"Forensic Testing of Security Recording Equipment" - The forensic examination of time-lapse recordings invariably require that attempts be made to obtain the original videotape .