1. ILO. Safety in numbers: pointers for a global safety culture at work. Geneva, Switzerland, 2003; ISBN: 92-2-113741-4. http://www.ilo.org/safework/info/publications/WCMS_142840/lang–en/index.htm (download on 22 February 2014).
2. EU-OSHA. New tools to improve occupational safety and health and to increase the competitiveness of your business, press release of 10 Sept. Bilbao, 2002. Online in 11 EU languages at: agency.osha.eu.int/news/press_releases/index_en.htm
3. Occupational health conditions in extreme environments;Rodahl;Ann Occup Hyg,2003
4. Health problems in cold work;Mäkinen;Ind Health,2009