References
- Abramowitz, M. and Stegun, I. A., Eds. (1968). Handbook of Mathematical Functions with Formulas, Graphs & Mathematical Tables. Dover Publications, New York, NY.
- Heaphy, M. S. and Gruska, G. F. (1984). “‘Stop Light’ Control.” Statistics Division Newsletter, ASQC, Vol. 5: 2, February.
- Juran, J. M.; Gryna, F. M.; and Bingham, R. S., Eds. (1979). Quality Control Handbook, 3rd ed. Quality Press, Milwaukee, WI.
- Juran, J. M. and Gryna, F. M. (1980). Quality Planning and Analysis, 2nd ed. McGraw-Hill, New York, NY.