1. Council Directive 1996/62/EC of 27 September 1996 on ambient air quality assessment and management, Official Journal of the European Union, L 296, 21/11/1996, 55–63.
2. Council Directive 1999/30/EC of 22 April 1999 relating to limit values for sulphur dioxide, nitrogen dioxide and oxides of nitrogen, particulate matter and lead in ambient air, Official Journal of the European Union, L 163, 29/06/1999, 41–60.
3. Directive 2000/69/EC of the European Parliament and of the Council of 16 November 2000 relating to limit values for benzene and carbon monoxide in ambient air, Official Journal of the European Union, L 313, 13/12/2000, 12–21.
4. Directive 2002/3/EC of the European Parliament and of the Council of 12 February 2002 relating to ozone in ambient air, Official Journal of the European Union, L 67, 09/03/2002, 14–30.
5. Directive 2004/107/EC of the European Parliament and of the Council of 15 December 2004 relating to arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons in ambient air, Official Journal of the European Union, L 23, 26/01/2005, 3–16.