European Commission. Greenhouse gas emission allowance trading system. Summaries of EU Legislation. 2019. [Online] Available from: https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=LEGISSUM%3Al28012 [Accessed 12.12.2019].
EUR-Lex. Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 establishing a scheme for greenhouse gas emission allowance trading within the Community and amending Council Directive 96/61/EC. [Online] Available from: http://data.europa.eu/eli/dir/2003/87/oj [Accessed 12.12.2019].
EUR-Lex. Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 establishing a system for greenhouse gas emission allowance trading within the Union and amending Council Directive 96/61/EC. Consolidated version. [Online] Available from: http://data.europa.eu/eli/dir/2003/87/2018-04-08 [Accessed 12.12.2019].