TY - China Safety Science Journal A1 - GUO Jiuxia, YANG Zongxin, XIA Zhenghong, TANG Weizhen T1 - Invulnerability analysis for airport weighted networks before and after COVID-19 Y1 - 2022-09-05 JF - China Safety Science Journal JO - China Safety Science Journal SP - 91 EP - 97 VL - 32 IS - 8 UR - http://www.cssjj.com.cn N1 - 10.16265/j.cnki.issn1003-3033.2022.08.2624 ER -