1. Specification and Design of Safety Systems for the Process Industries;Balls,1987
2. Triple Redundant Fault Tolerance: A Hardware-Implemented Approach;Smith,1988
3. High Availability Systems for Safety and Performance — The Coverage Factor;Goble,1989
4. The Theory and Practice of Reliable System Design;Siewiorek,1982
5. Reliability Evaluation of Engineering Systems: Concepts and Techniques;Billinton,1983