Biler, Piotr Cezary, and Tadeusz Nadzieja. “Structure of Steady States for Streater’s Energy-Transport Models of Gravitating Particles”. Topological Methods in Nonlinear Analysis 19, no. 2 (June 1, 2002): 283–301. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2002.015.