Bondar, Ye.A., S.F. Gimelshein, A.N. Molchanova, and M.S. Ivanov. 2014. “VV-Exchange in Direct Monte Carlo Simulation of Rarefied Gas Flows”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie) 15 (42):549-59. https://en.num-meth.ru/index.php/journal/article/view/790.