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	Evaluating the impact of free trade zone construction on urban air pollution in China—Empirical evidence from a spatial differences-in-differences approach 期刊论文 Frontiers in Environmental Science,2023, 卷号: 10 作者: Lou, Bailu; Xie, Baiwei; Liu, Peng; Zhu, Mingzi; Xu, Wangzi 收藏 \| 浏览/下载：16/0 \| 提交时间：2023/02/14 free trade zone intermediary effect test spatial differences-in-differences spatial differences-in-differences-in-differences spatial spillover urban PM2.5 emission
	Ghost town or city of hope? The spatial spillover effects of high-speed railway stations in China 期刊论文 Transport Policy,2019, 卷号: 81, 页码: 230-241 作者: Zheng, Longfei; Long, Fenjie; Chang, Zheng; Ye, Jingsong 收藏 \| 浏览/下载：16/0 \| 提交时间：2022/06/13 China Difference-in-differences High speed railway New town development Nighttime light images Spatial spillover effect