Górnicki, Jarosław. “On the Structure of Fixed Point Sets of Asymptotically Regular Mappings in Hilbert Spaces”. Topological Methods in Nonlinear Analysis 34, no. 2 (December 1, 2009): 383–389. Accessed July 22, 2024. https://apcz.umk.pl/TMNA/article/view/TMNA.2009.049.