C. R. Rao (1973, problem 5.11) constructed an example where a minimum variance unbiased estimator exists for the parameter function (1 - α)2 but no uniformly minimum variance unbiased estimator exists ...

The maximum likelihood (ML) procedure of Hartley and Rao [2] is modified by adapting a transformation from Patterson and Thompson [7] which partitions the likelihood under normality into two parts, ...