1. Basu, R.N. (2001), “Six sigma to fit sigma: the third wave of operational excellence”, IIE Solutions, June, Atlanta, GA.
2. Kaplan, R.S. and Norton, D.P. (1996), The Balanced Scorecard, HBS Press, Boston, MA.
3. Ling, R.C. and Goddard, W.E. (1988), Orchestrating Success, John Wiley & Sons, New York, NY.
4. HBS (2000), Implementing The Balanced ScoreCard, Harvard Business School Publishing, Boston, MA.
5. Harvey, D. (2001), Competing in Collaborative Economy, Business Intelligence, London.