Crooks, Elaine C. M., et al. “On Long-Time Dynamics for Competition-Diffusion Systems With Inhomogeneous Dirichlet Boundary Conditions”. Topological Methods in Nonlinear Analysis, vol. 30, no. 1, Sept. 2007, pp. 1-36, https://apcz.umk.pl/TMNA/article/view/TMNA.2007.017.