Osu, Bright O, and Philip U Uzoma. “The Hartman-Wintner Law of the Iterated Logarithm for Noncommutative Martingales”. International Journal of Mathematical Research 5, no. 2 (September 17, 2016): 123–130. Accessed May 2, 2024. https://archive.conscientiabeam.com/index.php/24/article/view/2190.