PetrinaD. Ya., and PetrinaК. D. “Stochastic Dynamics and Boltzmann Hierarchy. I”. Ukrains’kyi Matematychnyi Zhurnal 50, no. 2 (February 25, 1998): 195–210. Accessed October 6, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4955.