INTRAKUL, Jumpot and IAMPIBOONVATANA, Smith Yokpaisan. Corrigendum to "Retracting a ball in $\ell_1$ onto its simple spherical cap" (Topol. Methods Nonlinear Anal. 63 (2024), no.1, 115-129). Topological Methods in Nonlinear Analysis. Online. 14 June 2025. pp. 1 - 2. [Accessed 6 July 2025]. DOI 10.12775/TMNA.2024.047.