Koval, V. A. “On the Strong Law of Large Numbers for Multivariate Martingales With Continuous Time”. Ukrains’kyi Matematychnyi Zhurnal 53, no. 9 (September 25, 2001): 1287–1291. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4348.