Transboundary Flood Risk Management: Experiences from the UNECE Region, s. 32. United Nations Publications, 2014. ISBN 9210543416. Teoksen verkkoversio.
Dill, William A.: Inland Fisheries of Europe, s. 83. EIFAC technical paper: Supplement. Numero 52. Food and Agriculture Organization of the United Nations, 1993. ISBN 9251033587. Teoksen verkkoversio.