M. Lampis and D. Y. Petrina, “Boltzmann-Enskog limit for equilibrium states of systems of hard spheres in the framework of a canonical ensemble”, Ukr. Mat. Zhurn., vol. 49, no. 9, pp. 1195–1205, Sep. 1997, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5118