1. Leveson, N.G.: Safeware - System Safety and Computers: A Guide to Preventing Accidents and Losses Caused by Technology. Addison-Wesley, Reading (1995)
2. International Electrotechnical Commission (IEC): Functional safety of electrical/electronic/programmable electronic safety-related systems (IEC 61508)
3. European Committee for Electrotechnical Standardization (CENELEC): Railway applications - The specification and demonstration of Reliability, Availability, Maintainability and Safety (RAMS) (EN 50126)
4. European Committee for Electrotechnical Standardization (CENELEC): Railway applications - Communication, signalling and processing systems - Software for railway control and protection systems (EN 50128)
5. European Committee for Electrotechnical Standardization (CENELEC): Railway applications - Communication, signalling and processing systems - Safety related electronic systems for signalling (EN 50129)