Reich, Simeon, and Alexander J. Zaslavski. “Asymptotic Behavior of Inexact Orbits of Nonexpansive Mappings”. Topological Methods in Nonlinear Analysis 59, no. 2A (November 27, 2020): 525–535. Accessed June 28, 2025. https://apcz.umk.pl/TMNA/article/view/32059.