References
1991 Act of the International Union for the Protection of New Varieties of Plants (UPOV) Convention
http://www.upov.int/upovlex/en/conventions/1991/content.html
Explanatory Notes on the UPOV Convention
http://www.upov.int/explanatory_notes/en/
International Union for the Protection of New Varieties of Plants (2005), UPOV Report on the Impact of Plant Variety Protection
http://www.upov.int/export/sites/upov/about/en/pdf/353_upov_report.pdf
International Union for the Protection of New Varieties of Plants (2012), Symposium on the Benefits of Plant Variety Protection for Farmers and Growers, November 2, 2012, Geneva Switzerland.
http://www.upov.int/export/sites/upov/about/en/pdf/357E_4.pdf