Hua, Wen; Ong, Ghim Ping: 'Network survivability and recoverability in urban rail transit systems under disruption', IET Intelligent Transport Systems, 2017, 11, (10), p. 641-648, DOI: 10.1049/iet-its.2017.0102
IET Digital Library, https://digital-library.theiet.org/;jsessionid=m87n3hc1no41.x-iet-live-01content/journals/10.1049/iet-its.2017.0102