Summary
Lower bound of risk in linear unbiased estimation and its connection with the existence of a uniformly minimum variance linear unbiased estimator is considered.
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Stęniak, C. Lower bound of risk in linear unbiased estimation and its application. Ann Inst Stat Math 35, 375–378 (1983). https://doi.org/10.1007/BF02480993
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DOI: https://doi.org/10.1007/BF02480993