1. P. L. Dressel, “Statistical seminvariants and their estimates with particular emphasis on their relation to algebraic invariants,”Ann. Math. Statist. 9 (1940), 33–57.
2. A. Ebner, “Cumulant component estimation in the balanced one-way nested classification”, M. Sc. Thesis at Cornell University, 1959.
3. W. Feller,An Introduction to Probability Theory and its Applications, II, Wiley, New York, 1966.
4. M. H. Hansen, W. N. Hurwitz and W. G. Madow,Sample Survey Methods and Theory, II, Wiley, New York, 1953.
5. H. E. Robbins, “The asymptotic distribution of the sum of a random number of random variables,”Bull. Amer. Math. Soc., 54 (1948), 1151–1161.