1. Barnard, G. A. (1976). “Conditional inference is not inefficient.” Scand. J. Statist.
3, 132–134. [Problem 27.]
2. Barnard, G. A. and Sprott, D. A. (1971). “A note on Basu’s examples of anomalous ancillary statistics.” In Foundations of Statistical Inference (Godambe and Sprott, eds.), Holt, Rinehart, and Winston, Toronto, 163–176.
3. Barndorff Nielsen, O. (1978). Information and Exponential Families in Statistical Theory, Wiley, New York. [Provides a systematic discussion of various concepts of ancillarity with many examples].
4. Barndorff Nielsen, O. (1980). “Conditionality resolutions.” Biometrika
67, 293–310.
5. Barndorff Nielsen, O. (1983). “On a formula for the distribution of the maximum likelihood estimator.” Biometrika
70, 343–365.