1. Ahmad, S., William, J.D., Charles, H.A.: Process performance in product development: measures and impacts. Eur. J. Innov. Manage. 7(3), 205–217 (2004)
2. Crosby, P.: Quality is Free. McGraw-hill, New York (1979)
3. Deming, W.E.: Out of the Crisis. MIT Center for Advanced Engineering Study, Cambridge (1986)
4. Drucker, P.: The man who changed the world. Bus. Rev. Wkly. S. 49 (1997)
5. Feigenbaum, A.: Total quality control, 3. Aufl. revised, McGraw-Hill, New York (1991)