GordevskiiV. D., and GukalovA. A. “Approximate Solutions of the Boltzmann Equation With Infinitely Many Modes”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 3 (March 25, 2017): 311-323. Accessed September 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1698.