Yang, Junping, Jiusheng Du, Dingming Liu, and Zhipeng Yang. “Spatial-Temporal Evolution Characteristics of Population Aging and Its Influencing Factors in Zhongyuan Urban Agglomeration”. International Journal of Social Sciences and Public Administration 7, no. 1 (May 14, 2025): 29–39. Accessed April 29, 2026. https://ijsspa.org/index.php/ojs/article/view/68.