Nguyen, Trung Hieu, and Thi Phuong Le. “Convergence of Three-Step Iteration for Asymptotically Nonexpansive Mappings in CAT(0) Spaces”. Natural Sciences Issue 15, no. 5 (April 27, 2026): 103–120. Accessed September 10, 2026. https://dthujs.vn/index.php/nsen/article/view/3028.