1. Sematech Official Dictionary, Rev. 3.0, Sematech, Austin, TX, 1991, p. 74.
2. C.A. Jacobson, Encyclopedia of Chemical Reactions, Vol. 5, Chapman and Hall, New York, 1953, p. 340.
3. Design and Analysis of Experiments Using JMP Software, Course Notes, SAS Institute, Cary, NC, 1995, Ch. 5.