1. Box, G.E.P., Draper, N.R.: Response Surfaces, Mixtures, and Ridge Analyses: Probability and Statistics, 2nd edn. Wiley, Hoboken (2007)
2. Cohen, J., Cohen, P., West, S.G., et al.: Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences, 3rd edn. Lawrence erlbaum Associates, Mahwah, London (2002)
3. Montgomery, D.C.: Design and Analysis of Experiments, 4th edn. Wiley, New York (1997)
4. Box, G.E.P., Wilson, K.B.: On the experimental attainment of optimum conditions. J. Roy. Stat. Soc.: Ser. B (Methodol.) 13(1), 1–45 (1951)
5. Box, G., Hunter, J.S.: MultiFactor experimental designs for exploring response surfaces. Ann. Math. Stat. 28, 195–242 (1957)