References

Anderberg, M. R. (1973), Cluster Analysis for Applications, New York: Academic Press Inc.

Hand, D. J., Daly, F., Lunn, A. D., McConway, K. J., and Ostrowski E. (1994), A Handbook of Small Data Sets, London: Chapman & Hall, 297–298.

Harman, H. H. (1976), Modern Factor Analysis, Third Edition, Chicago: University of Chicago Press.

Harris, C. W., and Kaiser, H. F. (1964), "Oblique Factor Analytic Solutions by Orthogonal Transformation," Psychometrika, 32, 363–379.