1. Agricultural products and foodstuffs – PDO and PGI - Reg. (EC) No. 510/2006, Oils and fats, http://ec.europa.eu/agriculture/quality/schemes/index_en.htm
2. Arete. 2013. Study on assessing the added value of PDO/PGI products, Executive Summary, Commissioned Study by the European Commission, December. http://ec.europa.eu/agriculture/external-studies/addedvalue-pdo-pgi_en.htm
3. Belletti G, Brazzini A, Marescotti A. 2014. Collective rules and the use of protected geographical indications by firms. Prologue. The role of localised agrifood systems in a globalised Europe 7, 11.