1. Anon (2016) SECUR-ED Urban Transportation – European Demonstration (SECUR-ED). [Online] Available at: http://www.secur-ed.eu/(accessed 14/09/16).
2. Civil Protection and Disaster Management Law, LR Saeima, Accepted: 05.05.2016. Shall enter into force: 01.10.2016., Published: “LatvijasVēstnesis’, 100 (5672), 25.05.2016.
3. COUNTERACT Cluster of User Networks in Transport and Energy Relating to Anti-terrorist ACTivities. Available at: http://www.uitp.org/content/counteract-0.
4. DECOTESS. Available at: http://www.decotessc1.eu/.
5. European Union. (2002) EN 13816 Transportation – Logistics and services – Public passenger transport – Service quality definition, targeting and measurement, s.l.: European Standard.