References
- Burr, I. W. (1967). “The Effect of Non-Normality on Constants for X-bar and R Charts”. Industrial Quality Control 23, pp. 563–569.
- Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product, republished by the American Society for Quality Control, Milwaukee, WI, 1980.
- Wheeler, D. J. (1996). Advanced Topics in Statistical Process Control. SPC Press, Knoxville, TN.
- Wheeler, D. J. and Chambers, D. S. (1992). Understanding Statistical Process Control, 2nd ed., SPC Press, Knoxville, TN.
- Wheeler, D. J. and Lyday R. W. (1989). Evaluating the Measurement Process, 2nd ed., SPC Press, Knoxville, TN.