The following is from a 17 August 2012 news item by the World Trade Organization.
On 17 August 2012, Argentina notified the WTO Secretariat of a request for consultations with the European Union on Spanish restrictions to the imports of biodiesel from Argentina. Argentina claims that Spain put in place a regulation in April that in effect discriminates against biodiesel imports from Argentina in favour of those produced in the European Union.
This item is available in its entirety at:
http://www.wto.org/english/news_e/news12_e/ds443rfc_17aug12_e.htm