The European emission trading scheme put to the test of state aid rules Author Sépibus J.A. Journal/Series Environmental Liability | Vol.17 (4);125-129; 5p. Date 2009 Source IUCN (ID: ANA-082613) Publisher | Place of publication Lawtext Publishing | Witney , UK Document type Article in periodical Language English Country/Territory European Union Subject Air & atmosphere Keyword Climate change Emissions trading