1. Site security guidelines for the US chemical industry;ACC,2001
2. Implementation guide for responsible care security code of management practices, site security & verification;ACC,2002
3. ACS (2002). San Diego: Advanced Chemical Safety Inc. (available at: http://www.chemical-safety.com/documents/pdf/SECURITY%20RAT.pdf).
4. Security guidelines for the petroleum industry;API,2003
5. Assessing risks from threats to process plants: threats and vulnerability analysis;Baybutt,2002