1. API RP 755 “Fatigue Risk Management Systems for Personnel in the Refining and Petrochemical Industries” American Petroleum Institute Washington D.C. 2019.
2. CCPS Glossary “CCPS Process Safety Glossary” Center for Chemical Process Safety https://www.aiche.org/ccps/resources/glossary.2050
3. EVOSTC Exxon Valdez Oil Spill Trustee Council website http://www.evostc.state.ak.us/.2050
4. Forest2014 “Walk the Line” Process Safety Progress Wiley Online Library DOI10.1002/prs.11724.