1. The Small Business Economy. Report to the President. [Website] 2009 [cited 2009 Nov 17, 2009]; Available from: http://www.sba.gov/advo/research/sb_econ2009.pdf .
2. State USDo. Small Business in the United States. 2009 [cited 2009 June 19, 2009]; Available from: http://economics.about.com/od/smallbigbusiness/a/us_business.htm .
3. Canada I. Small business research and policy: key small business statistics. [Website] 2005 [cited 2009 June 24, 2009]; Available from: http://www.ic.gc.ca/eic/site/sbrp-rppe.nsf/eng/rd01224.htm .
4. Audretsch D, van der Horst R, Kwaak T, Thurisk R. First section of the annual report on EU small and medium-sized enterprise. [Report on Website] 2009 [cited 2009 19 Nov 2009]; Available from: http://ec.europa.eu/enterprise/policies/sme/files/craft/sme_perf_review/doc_08/spr08_annual_reporten.pdf .
5. Walters D. Working safety in small enterprises in Europe: toward a sustainable system for worker participation and representation. Brussels: European Trade Union Confederation 2002.