1. Yu.V. Linnik, “Linear forms and statistical criteria. I, II,” Selected Transl. Math. Statist. Probab., 3, 1–90 (1963).
2. A.M. Kagan, Yu.V. Linnik, and C.R. Rao, Characterization Problems in Mathematical Statistics, Wiley, New York (1973).
3. M. L.Eaton, “Characterization of distributions by the identical distribution of linear forms,” J. Appl. Prob., 3, 481–494 (1966).
4. R. Yanushkevichius, “Some remarks on the characterization of populations by properties of linear statistics,” J. Math. Sci., 146, No. 4, 6062–6065 (2007).
5. B. Ramachandran and C. R. Rao, “Solution of functional equations arising in some regression problems and a characterization of the Cauchy law,” Sankhyā, Ser. A, 32, No. 1, 1–30 (1970).