Franzosa, Robert, Ketty A. de Rezende, and Ewerton R. Vieira. “Generalized Topological Transition Matrix”. Topological Methods in Nonlinear Analysis 48, no. 1 (September 2, 2016): 183–212. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2016.046.