V. A. Gasanenko, “On certain exact relations for sojourn probabilities of a wiener process”, Ukr. Mat. Zhurn., vol. 51, no. 6, pp. 842–846, Jun. 1999, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4671