References

  • Friendly, M. (1991), SAS System for Statistical Graphics, SAS Series in Statistical Applications, Cary, NC: SAS Institute Inc.

  • Gabriel, K. R. (1971), “The Biplot Graphical Display of Matrices with Applications to Principal Component Analysis,” Biometrika, 58, 453–467.

  • Golub, G. H. and Van Loan, C. F. (1989), Matrix Computations, 2nd Edition, Baltimore: Johns Hopkins University Press.

  • Gower, J. C. and Hand, D. J. (1996), Biplots, London: Chapman & Hall.

  • Jackson, J. E. (1991), A User’s Guide to Principal Components, New York: John Wiley & Sons.