1. 29 CFR 1915.12 2002 Precautions and the order of testing before entering confined and enclosed spaces and other dangerous atmospheres
2. 49 CFR, Part 193 2005 Liquefied natural gas facilities: Federal safety standards, USA Code of Federal Regulations
3. ABS Consulting 2004 www.abs-group.com
4. AcuTech Group 2008 Technical Panel review of the LNG vapor dispersion model evaluation protocol
5. AcuTech 2009 Review of the LNG vapor dispersion model evaluation protocol