Cheng, Haoyuan, Xiaoqian Liu, and Zhenlong Xu. “Impact of Carbon Emission Trading Market on Regional Urbanization: an Empirical Study Based on a Difference-In-Differences Model”. Economic Analysis Letters 1, no. 1 (September 15, 2022): 15–21. Accessed March 10, 2025. http://anser.press/index.php/eal/article/view/73.