1. H. Ahrens (1974), Estimation of multivariate components of variance, Math. Balkaica, 43, 13–15.
2. G. B. Airy (1861), On the Algebraical and Numerical Theory of Errors of Observations and the Combinations of Observations, MacMillan, London.
3. Y. Amemiya (1985), What should be done when an estimated between group covariance matrix is nonnegative definite?, Amer Statist, 39, 112–117.
4. Y. Amemiya (1986), On the multivariate variance components model, in ASA Proceedings of the Business and Economic Statistics Section, American Statistical Association, Alexandria, VA, 411–414.
5. B. M. Anderson, T. W. Anderson, and I. Olkin (1986), Maximum likelihood estimators and likelihood ratio criterion in multivariate components of variance, Ann. Statist., 14, 405–417.