1. Bloomfield, R., Stroud, R., Gashi, I., Bloomfield, R.: Information Security Audit of ERTMS, Technical Report (2010)
2. Stroud, R., Gashi, I., Bloomfield, R., Bloomfield, R.: ERTMS Specification Security Audit – Analysis of Attack Scenarios, Technical Report (2011)
3. UNISIG SUBSET-026, System Requirement Specification, Version 2.3.0, http://www.era.europa.eu/Document-Register/Pages/UNISIGSUBSET-026.aspx
4. UNISIG SUBSET-037, Euroradio FIS, Version 2.3.0, http://www.era.europa.eu/Document-Register/Pages/UNISIGSUBSET-037.aspx
5. UNISIG SUBSET-038, Offline Key management FIS, Version 2.3.0, http://www.era.europa.eu/Document-Register/Pages/UNISIGSUBSET-038.aspx