Additional References
- Bergman, B. and Klefsjö, B. (1994). Quality from Customer Needs to Customer Satisfaction. McGraw-Hill, New York and Studentlitteratur, Lund.
- Sullivan, L. P. (1984). “Reducing Variability: A New Approach to Quality”. Quality Progress 17, pp. 15–21.
- Vännman, K. (2000). “A Graphical Method to Control Process Capability” in Frontiers in Statistical Control 6, edited by H. J. Lenz and P. Th. Wilrich. Physica-Verlag, Heidelberg, New York, pp. 290–311.