Chernega, P. P. “Levy Downcrossing Theorem for the Arratia Flow”. Ukrains’kyi Matematychnyi Zhurnal 67, no. 2 (February 25, 2015): 261-271. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1978.