References

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

Harris, C.W.; and Kaiser, H.F. (1964), 'Oblique factor analytic solutions by orthogonal transformation,' Psychometrika , 32, 363-379.

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

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.