- Directive 2008/50/EC of the European Parliament and of the Council of 21 May 2008 on ambient air quality and cleaner air for Europe
- ΚΥΑ 14122/549, FEK 488/Β/30.3.2011: Measures for the improvement of air quality in compliance with the provisions of Directive 2008/50/EC “on ambient air quality and cleaner air for Europe” of the European Parliament and of the Council of 21 May 2008