Borgvang, S-A. and Selvik, J.R, 2000. Development of HARP Guidelines, SFT report 1759-2000. ISBN 82-7655-401-6

EC 1991 (European Community), 1991. Council Directive 91/676/EEC of 12 December 1991. Official Journal of the European Communities L375 (31 December 1991), 1-8.

EC 2000 (European Community), 2000. The Water Framework Directive. Directive of the European Parliament and of the Council 2000/60/EC Establishing a Framework for Community Action in the Field of Water Policy

EC 2003, COMMON IMPLEMENTATION STRATEGY FOR THE WATER FRAMEWORK DIRECTIVE (2000/60/EC) Guidance Document No 3 Analysis of Pressures and Impacts Produced by Working Group 2.1 - IMPRESS. ISBN 92-894-5123-8

EC 2003, COMMON IMPLEMENTATION STRATEGY FOR THE WATER FRAMEWORK DIRECTIVE (2000/60/EC) Guidance Document No 7. Monitoring under the Water Framework Directive. Produced by Working Group 2.7 - Monitoring. ISBN 92-894-5127-0

Edwards, A.C. and Withers, P.J.A. , 1998. Soil phosphorus management and water quality: a UK perspective. Soil Use and Management, 14, 124-130.

Grant, R., Laubel, A., Kronvang, B., Andersen, H.E., Svendsen, L.M. and Fuglsang, A., 1996. Loss of dissolved and particulate phopshorus forms in drainage water from four arable catchments on structured soils in Denmark. Water Research, Vol. 30, No. 11, 2633-2642.

Haygarth, P.M., Chapman, P.J., Jarvis, S.C. and Smith, R.V., 1998. Phosphorus budgets for two contrasting grassland farming systems in UK. Soil Use and Management, 14, 160-167.

Iversen, T.M., Kjeldsen, K., Kristensen, P., Haan, B., Oirschot, M., Parr, W. and Lack, T., 1997. Integrated Environmental Assessment on Eutrophication. Technical Report No. 207, Ministry of Environment, National Environmental Research Institute, Silkeborg, Denmark, 101 p.

Kristensen, P. and Hansen, O.H., 1994. European Rivers and Lakes - Assessment of their environmental state. European Environment Agency, EEA Environmental Monographs 1, Copenhagen, 122 p.

Kronvang, B., Grant, R., Larsen, S.E., Svendsen, L.M. and Kristensen, P. ,1995. Non-point source nutrient losses to the aquatic environment in Denmark. Impact of agriculture. Marine and Freshwater Research, Vol. 46, 167-177.

Kronvang, B., Græsbøll, P., Larsen, S.E., Svendsen, L.M. and Andersen, H.E., 1996. Diffuse nutrient losses in Denmark. Wat. Sci. Tech., 33, 81-88.

OSPAR 2003, 2003 Strategies of the OSPAR Commission for the Protection of the Marine Environment of the North-East Atlantic, (Reference number: 2003-21) Part II.

Rekolainen, S., Grönros, J., Bärnlund, I., Nikander, A., and Laine, Y., 1998. Modelling the impact og measurements practicies on agricultural phosphorus losses to surface waters of Finland. Proc. 3th International Conference on Diffuse Pollution. Eding-bourgh, Scotland, 31 August - 4 September 1998, SEPA.

Schoumans, O.F. & Silgram, M. (eds.), 2003. Review and literature evaluation of Quantification Tools for the assessment of nutrient losses at catchment scale. EUROHARP report 1-2003, NIVA report SNO 4739-2003, ISBN 82-557-4411-5

European Environment Agency, 2001,
http://themes.eea.eu.int/Sectors_and_activities/agriculture/indicators/nutrients/index_html