References
- Box, G. E. P. and Draper, N. R. (1987). Empirical Model-Building and Response Surfaces. John Wiley & Sons, New York, NY.
- Box, G. E. P.; Hunter, W. G.; and Hunter, J. S. (1978). Statistics for Experimenters: An Introduction to Design, Data Analysis, and Model Building. John Wiley & Sons, New York, NY.
- Freedman, D.; Pisani, R.; Purves, R.; and Adhikari, A. (1991). Statistics. W. W. Norton, New York, NY.