1. Anderson, T.W. (1958). An Introduction to Multivariate Statistical Analysis. Wiley, New York.
2. Barnard. G. (1974) Conditionality. pivotals, and robust estimation. Proceedings of the Conference on Foundational Questions in Statistical Inference. Memoirs No. 1. Dept. of Theoretical Statist., Univ. of Aarhus. Denmark.
3. Cramér, H. (1946). Mathematical Methods in Statistics. Princeton Univ. Press.
4. Gray, H., Schucany. W. and Watkins, T. (1975). On the generalized jackknifc and its relation to statistical differentials. Biometrika
62 637–642.
5. Hartigan, J.A. (1969). Using subsamplc values as typical values. J. Amer. Statist. Assoc.
64 1303–1317.