1. G. Jogesh Babu, Probabilistic methods in the theory of additive arithmetic functions, Ph.D. issertation, The Indian Statistical Institute, Calcutta, 1973.
2. M.B. Barban, A.I. Vinogradov, On the number-theoretic basis of probabilistic number theory (Russian), Dokl. Akad. Nauk SSSR 154 (1964), 495–496.
3. P. Billingsley, Additive functions and Brownian motion, Notices Amer. Math. Soc., 17(1970), 1050 Abstract # 681-A9.
4. P. Billingsley, Prime numbers and Brownian motion, Amer. Math. Monthly 80(1973), 1099–1115.
5. P. Billingsley, The probability theory of additive arithmetic functions, Ann. of Probability 2(1974), 749–791.