1. J. F. Clapperton, “Progress in Flavor Research,” ed. by D. G. Land and H. E. Nursten, Applied Science Publishers, London, 1979, pp. 1–14.
2. W. J. Dixon (ed.), “BMDP Biomedical Computer Programs,” Health Sciences Computing Facility, University of California Press, Los Angeles, 1975.
3. D. F. Morrison, Classification by the Linear Discriminant Function, in “Multivariate Statistical Method,” McGraw-Hill, New York, 1976, p. 231.
4. H. Miedaner, L. Narziss, and P. Eichhorn, Proc. Eur. Brew. Conv., Lisbon, 1991, pp. 401–408.