LampisM., PetrinaD. Y., and PetrinaК. D. “Stochastic Dynamics As a Limit of Hamiltonian Dynamics of Hard Spheres”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 51, no. 5, May 1999, pp. 614-35, https://umj.imath.kiev.ua/index.php/umj/article/view/4649.