1. Council Directive 70/156/EEC. Official Journal of the European Union L 42,1–15.
2. Regulation (EC) No. 715/2007. Official Journal of the European Union L 171,1–16.
3. Commission Regulation (EC) No. 692/2008. Official Journal of the European Union L 199,1–135.
4. Directive 98/69/EC. Official Journal of the European Union L 350,1–57.
5. Impact of selected policy measures on Europe’s air quality.EEA – European Environmental Agency: EEA Report No 08/2010;Copenhagen, Denmark, 2010.