Anonymous Patron writes "Two other sources of information about CD/DVD longevity.
NIST Special Publication 500-252. Care and Handling of CDs and DVDs -- A Guide for Librarians and Archivists. http://www.itl.nist.gov/div895/carefordisc/CDandDV DCareandHandlingGuide.pdf
Kyong-Ho Lee, Oliver Slattery, Richang Lu, Xiao Tang, and Victor McCrary. The State of the Art and Practice in Digital Preservation, in Journal of Research of the National Institute of Standards and Technology 107:1 (Jan- Feb 2002). http://nvl.nist.gov/pub/nistpubs/jres/107/1/j71lee .pdf"