The Law of the Iterated Logarithm for Multiplicative Systems P. Revesz Indiana University Mathematics Journal 1972 text pdf 10.1512/iumj.1972.21.21045 10.1512/iumj.1972.21.21045 en Indiana Univ. Math. J. 21 (1972) 557 - 564 state-of-the-art mathematics http://iumj.org/access/