Gabriella Galli, giugno 2011
European Agency for Safety and Health at Work, 2009
European Agency for safety and Health at Work, 2004
Agenzia europea per la sicurezza e la salute sul lavoro
Health Services Utilization and Outcomes Commission of Alberta, marzo 2003
Maniv Pathak, September 2008
Roberto Leombruni, Tiziano Razzolini, Francesco Serti, November 10 2009
International Social Security Association, 2011
Greenstreet Berman Ltd for the Health and Safety Executive, 2006
Malattie professionale e costi da mancata prevenzione