1. 3M Corporate Intellectual Property Policy. Available from: [http://intranet.mmm.com/legal/documents/IntellectualPropertyPolicy.pdf].
2. Patent intelligence and technology report. Arlington, Va.: IFI/Plenum Data Co., 2005.
3. Many sources define Six Sigma processes and workflows. A representative resource is Forrest W. Breyfogle III, James M. Cupello, Becki Meadows, Managing Six Sigma: a practical guide to understanding, assessing, and implementing the strategy that yields bottom-line success/New York: John Wiley, c2001.
4. France Bouthillier and Kathleen Shearer Assessing competitive intelligence software: a guide to evaluating CI technology. Medford, NJ: Information Today, 2003.
5. Value-added processes in information systems;Taylor,1986