1. IEC 61508. Functional safety of electrical/electronic/programmable electronic safety-related systems (IEC 61508-1 to 7). Geneva: IEC (International Electrotechnical Commission); 2000.
2. CENELEC NF EN 50126. Railway Applications: the specification and demonstration of reliability, availability, maintainability and safety (RAMS). CENELEC European standard (European Committee for Electrotechnical Standardization). Fontenay-aux-Roses: UTE (Union Technique de l’Electricité et de la communication); 2000.
3. CENELEC prEN 50128. Railway Applications: Software for railway control and protection systems. CENELEC European standard (European Committee for Electrotechnical Standardization). Fontenay-aux-Roses: UTE (Union Technique de l’Electricité et de la communication); 1998.
4. CENELEC prEN 50129. Railway Applications: Safety related electronic systems for signalling. CENELEC European standard (European Committee for Electrotechnical Standardization). Fontenay-aux-Roses: UTE (Union Technique de l’Electricité et de la communication); 1999.
5. Probabilistic risk assessment and management for engineers and scientists;Kumamoto,1996