1. Arnheimer, B. and M. Brandt, 1998. Modelling Nitrogen transport and retention in the catchments of Southern Sweden. Ambio 27: 471–480.
2. Behrendt, H., 1996. Inventories of point and diffuse sources and estimated nutrient loads — A comparison for different river basins in Central Europe. Wat. Sci. Technol. 33: 99–107.
3. Behrendt, H., 1999. Application of different methods of source apportionment of nutrients to river basins in Northern Germany. Wat. Sci. Technol. (in print).
4. Behrendt, H. and A. Bachor, 1998. Point and diffuse load of nutrients to the Baltic Sea by river basins of North East Germany (Mecklenburg-Vorpommern). Wat. Sci. Technol. 38, 10, 147–155.
5. Behrendt, H., R. Korol, M. Stronska-Kedzia and W.-G. Pagenkopf, 1998. Nutrient emissions of point and diffuse sources, transport and retention within the Odra Basin and its main tributaries. Proceedings, International Conference `Management of trans-boundary waters in Europe’, 22–25 September 1997, Mrzezyno, Poland: 485–497.