Cliff Edwards; Peter Burrows; Ronald Grover; Tom Lowry; Kenji Hall (October 17, 2005). "Daggers Drawn Over DVDs". businessweek.com. Archived from the original on November 6, 2007. Retrieved October 19, 2007.
Waters, Richard Waters; Paul Taylor; Mariko Sanchanta (January 6, 2006). "Sony DVD move deals blow to Microsoft". Financial Times. Retrieved January 6, 2008.
Cliff Edwards; Peter Burrows; Ronald Grover; Tom Lowry; Kenji Hall (October 17, 2005). "Daggers Drawn Over DVDs". businessweek.com. Archived from the original on November 6, 2007. Retrieved October 19, 2007.