Journal of Beijing University of Posts and Telecommunications(Social Sciences Edition)
Impact of COVID-19 on Passenger Airline Network of China’s Capital Cities
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LIU Hengyu, YANG Benji
Journal of Beijing University of Posts and Telecommunications(Social Sciences Edition) . 2021, (5): 69 -81 .  DOI: 10.19722/j.cnki.1008-7729.2021.0143

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