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2. S. Zacks, The Theory of Statistical Inference, John Wiley, New York, 1971.
3. V.V. Fedosov; theory of Optimal Experiments, Academic Press, New York, 1972.
4. T. Ferguson; Mathematical Statistics; A Decision Theoretic Approach, Academic Press, New York-London, 1967.
5. C.R. Rao; Linear Statistical Methods and Their Applications, John Wiley, New York, 1965.