1. J Wishart, The generalised product moment distribution in samples from a normal multivariate population. Biometrika 20A(1–2), 32–52 (1928). doi:
10.1093/biomet/20A.1-2.32
2. M Hazewinkel (ed.), Encyclopaedia of Mathematics, Vol. 9 (Sto–Zyg) (Kluwer, Dordrecht, 1993)
3. TW Anderson, An introduction to multivariate statistical analysis, 3rd edn. (John Wiley & Sons, Hoboken NJ, 2003)
4. H Cramér, Mathematical methods of statistics (Princeton University Press, Princeton, N.J., 1946)
5. MH DeGroot, Optimal statistical decisions (McGraw-Hill, New York, 1969)