Zhang, Xin, Xinxin Wang, and Huan Li. “The Nonlinear Relationship Between Rural Territorial Functions and Regional Economic development—A Case Study of Yangtze River Delta, China”. Sustainable Economies 3, no. 1 (March 26, 2025): 1513. Accessed April 5, 2025. https://ojs.sin-chn.com/index.php/SE/article/view/1513.