RACHPIRA, Nattapol, SAEJUNG, Satit and YOTKAEW, Pongsakorn. On Halpern-type sequences with applications in Hadamard spaces. Topological Methods in Nonlinear Analysis. Online. 14 June 2025. Vol. 65, no. 2, pp. 473 - 496. [Accessed 5 March 2026]. DOI 10.12775/TMNA.2024.038.