Stolot, Kinga. “Conley Index over the Base Morphism for Multivalued Discrete Dynamical Systems”. Topological Methods in Nonlinear Analysis 29, no. 1 (March 1, 2007): 163–180. Accessed February 6, 2026. https://apcz.umk.pl/TMNA/article/view/TMNA.2007.007.