1. ICPDR (2009) The Danube River Basin (facts and Figures). ICPDR, Vienna
2. ICPDR (1998) Convention on Cooperation for the Protection and Sustainable use of the Danube River (Danube River Protection Convention). ICPDR, Vienna. http://www.icpdr.org/main/publications/legal-documents
3. ICPDR (2009) Danube River Basin District Management Plan. ICPDR Publication IC/151, Vienna. http://www.icpdr.org/main/activities-projects/danube-river-basin-management-plan-2009
4. Directive 2008/105/EC of the European parliament and of the Council of 16 December 2008 on environmental quality standards in the field of water policy. Offic J Eur Communities L348:84
5. Directive 2013/39/EC of the European parliament and of the Council of 12 August 2013 amending Directives 2000/60/EC and 2008/105/EC as regards priority substances in the field of water policy. Offic J Eur Communities L226:1