1. Methods for Statistical Data Analysis of Multivariate Observations, Wiley, New York (1977).
2. in Proc. Symp. Appl. Statist., NEUCC, Copenhagen January 1984, ed. by and ISSN 0105 9653.
3. and Multivariate Analysis, Academic Press, London (1979).
4. Four levels of pattern recognition
5. and in Food Research and Data Analysis, ed. by and Applied Science Publishers, London (1983).