The American Heritage Dictionary of the English Language, 4th ed. (Boston: Houghton Mifflin Company, 2000).

NaturalMotion Web site, http://www.naturalmotion.com.

Wikipedia, http://en.wikipedia.org/wiki/Disruptive_technology.

Kevin Maney, "Cyberspeak" column, USA Today, July 5, 2005.

"Itronix Delivers the Goods with FedEx," corporate press release, December 5, 2000, and "Consignment Tracking: Courier Companies Leverage the Net," Financial Times, May 7, 2003.

Laura Mazur, "How to Innovate through Scaling Up a Niche Idea," Marketing, December 11, 2003, p. 16.

Darell Dunn, "Dell Sees Future Growth Outside the PC Market," Computing, February 17, 2005, p. 14.

Dina El Boghdady, "The Starbucks Strategy? Locations, Locations, Locations," The Washington Post, August 25, 2002, p. H01.

P. R. Nayak and J. Ketteringham, "3M's Post-it Notes: A Managed or Accidental Innovation?" in The Human Side of Managing Technological Innovation. Ralph Katz, ed. (New York: Oxford University Press, 1997), pp. 367-377.

"Pfizer Scientists Receive Prix Galien Award for Discovery of Viagra," PR Newswire, November 27, 2000.

Rosie Mestel, "Sexual Chemistry: Discovery of Viagra," Discover 20, no. 1 (January 1999), 32.

A customer solution that does not require any innovation is not considered part of the spectrum.

The American Heritage Dictionary of the English Language, 4th ed. (Boston: Houghton Mifflin Company, 2000).

Mike Musgrove", Nikon Says It's Leaving Film-Camera Business," The Washington Post, January 12, 2006.

Yuki Noguchi, "Konica Minolta Plans to Drop Sales of Film, Digital Cameras," The Washington Post, January 20, 2006.

"Inside Intel: Paul Otellini's Plan Will Send...