Nanoelectronics and Information Technology: Advanced Electronic Materials and Novel Devices, 2nd edition, by Rainer Waser (editor), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim (2005).

IBM research whitepaper.

"Spin-Dependent sensors", by Jim Daughton, Proceedings of the IEEE Volume 91 #5, page 681 (2003).

Sony research page on DVD recordable media homepage. and for general information on DVDs and DVD-RW technology.