2IEC61511 -1. Functional safety - safety instrumented systems for the process industry sector. 2003.
3William (Bill) L. Mostia,Jr. P. E, Safety Instrumented Systems (PPT) [ OL]. controlsweekly. com, 2006.
4Out of Control : " Why Control Systems go Wrong and How to Prevent Failure", U. K, Sheffield, Health and Safety Executive, 1995.
5Enhanced Markov Analysis as a method to assess safety in the process industry, Johannes L. Rouvroye. - Eindhoven : Technische Universiteit Eindhoven, 2001.
6William M. Goble. Control Systems Safety Evaluation & Reliability, 2nd Edition, 1998 : 101 - 115.
