Characterization problems in mathematical statistics - Kagan, A. M. ((Abram Meerovich)); Rao, C. Radhakrishna (Calyampudi Radhakrishna), 1920-; Linnik, I︠U︡. V. (I︠U︡riĭ Vladimirovich), 1915-1972 (John Wiley & Sons, 1973)