1. ABS Group Inc., Course 207: Accident frequency analysis methods, Section 17, Analysis of Standby Safety Systems.
2. Center for Chemical Process Safety (CCPS), Layer of protection analysis?simplified risk assessment, American Institute of Chemical Engineers, CCPS, New York, 2001.
3. CCPS, Guidelines for chemical process quantitative risk analysis, Second Edition, American Institute of Chemical Engineers, CCPS, New York, 2000.
4. American Society of Mechanical Engineers (ASME), Pressure vessels with overpressure protection by system design, Section VIII, Divisions 1 and 2, ASME Code Case 2211, The 1995 Boiler Pressure Vessel Code, ASME, New York, 1995.