Xu, Jing
Funding for this research was provided by:
the Anhui Provincial Key Project of Philosophy and Social Sciences in Universities (Building a "Portrait" of Small and Medium Cities Based on Multi source Open Data: Spatial Structure Identification, Differentiation, and Optimization)
Article History
Received: 9 May 2023
Accepted: 28 August 2023
First Online: 1 September 2023
Competing interests
: The author declares no competing interests.