The Association of Petrochemicals Producers in Europe (APPE), The European petrochemical industry, Glossary of Terms on Chemical Safety for Use in IPCS Publications, van Nieuwenhuyse, Brussels 2006. http://www.petrochemistry.eu/glossary.html, (Petrochem Ind - Brit) {473}
eHandS Health and Safety Management & Reporting Software, eHandS Health and Safety Glossary of Terms (online health and safety dictionary), Stirlingshire, UK 2009. http://www.ehands.co.uk/health-and-safety-glossary .html, (Hlth and Sfty Mgt - Brit) {51}