1. Altshuller G (1984) Creativity as an exact science. Gordon & Breach, New York
2. American Society of Quality (ASQ) www.asq.org
3. Baldrige National Quality Award www.quality.rist.gov
4. Barney M, McCarty T (2003) The new six sigma. Prentice Hall, Upper Saddle River
5. Bolstorff P, Rosenbaum R (2007) Supply chain excellence: a handbook for dramatic improvement using the SCOR model, 2nd edn. Amacom, New York