1. Davies, O.L., editor, “The Design and Analysis of Industrial Experiments,” Hafner Publishing Company, New York, 1960.
2. Efroymson, M.A., in “Mathematical Methods for Digital Computers,” Edited by A. Ralston and H. Wilf, John Wiley & Sons, Inc., New York, 1960.
3. Huggins, J.M., Chem. Spec. Mfr. Assoc., Proc. Mid-Year Meet. 53:113–118 (1967).
4. Barneson, R.A., N.F. Brannock, J.G. Moore and C. Morris, Chem. Eng. 77(16):132 (1970).
5. Derringer, G.C., “A Powerful Digital Method for Rubber Compound Optimization,” presented at the Meeting of the Division of Rubber Chemistry, A.C.S., Washington, D.C., May 1970.