Security Requirements Engineering in Safety-Critical Railway Signalling Networks. - Heinrich, Markus; Vateva-Gurova, Tsvetoslava; Arul, Tolga; Katzenbeisser, Stefan; Suri, Neeraj; Birkholz, Henk; Fuchs, Andreas; Krauß, Christoph; Zhdanova, Maria; Kuzhiyelil, Don; Tverdyshev, Sergey; Schlehuber, Christian (Secur. Commun. Networks, 2019)