1. Action Group on Erosion, Technology and Concentration (ETC Group) (2002a), ‘Patenting Elements of Nature’. 25 March 2002, http://www.etcgroup.org/upload/publication/pdf_file/220, accessed 4 July 2008.
2. Action Group on Erosion, Technology and Concentration (ETC Group) (2007), ‘Las 10 compañías de semillas más importantes del mundo 2006’, Ottawa: ETC group , http://www.etcgroup.org/upload/publication/pdf_file/657), accessed 18 February 2008.
3. ACTU (Australian Council of Trade Unions) (2009), ‘Fact Sheet’ (available at: http://www.actu.asn.au/Images/Dynamic/attachments/6494/actu_factsheet_ohs_-nanotech_090409.pdf), accessed on 11 May 2009.