Cui, Renhao, Ping Li, Junping Shi, and Yunwen Wang. “Existence, Uniqueness and Stability of Positive Solutions for a Class of Semilinear Elliptic Systems”. Topological Methods in Nonlinear Analysis 42, no. 1 (April 22, 2013): 91–104. Accessed April 25, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2013.026.