“Some Rigidity Theorems of Closed Geodesic Polygons and Spherical Curves in Metric Spaces With Curvature Bounded Below”.
European Journal of Pure and Applied Mathematics 17, no. 4 (October 31, 2024): 3932–3944. Accessed April 7, 2025.
https://www.ejpam.com/index.php/ejpam/article/view/5571.