Kjær, J., Olsen, P., Barlebo, H. C., Henriksen, T., Juhler, R. K., Plauborg, F.
, Grant, R., Nygaard, P. & Gudmundsson, L. (2005).
The Danish Pesticide Leaching Assessment Programme: Monitoring results May 1999-June 2004. Geological Survey of Denmark and Greenland.
http://www.pesticidvarsling.dk
Gyllström, M., Hansson, L.-A.
, Jeppesen, E., Garcia-Criado, F., Gross, E., Irvine, K., Kairesalo, T., Kornijow, R., Miracle, M. R., Nykänen, M., Nõges, T., Romo, S., Stephen, D., Van Donk, E. & Moss, B. (2005).
The role of climate in shaping zooplankton communities of shallow lakes.
Limnology and Oceanography,
50(6), 2008-2021.
Heckrath, G., Bechmann, M., Ekholm, P., Djodjic, F., Ulen, B.
, Andersen, H. E. & Olsen, P. (Ed.) (2005).
Tools for Assessing Phosphorus Loss from Nordic Agriculture. Copenhagen: Nordic Council of Ministers. TemaNord Vol. 2005:583
http://www.norden.org/pub/miljo/jordogskov/sk/TN2005583.pdf