Kjær, J., Olsen, P., Sjelborg, P., Formsgaard, I., Mogensen, B., Plauborg, F., Jørgensen, J. O. & Lindhardt, B. (2001).
The Danish Pesticide Leaching Assessment Programme: Monitoring Results May 1999 - July 2000. Geological Survey of Denmark and Greenland.
http://www.pesticidvarsling.dk
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
Kjær, J., Olsen, P., Barlebo, H. C., Henriksen, T., Plauborg, F.
, Grant, R., Nygård, P., Gudmundsson, L. & Rosenbom, A. (2007).
The Danish Pesticide Leaching Assessment Programme: Monitopring results May 1999-June 2006. Copenhagen: Geological Servey of Denmark and Greenland.
http://www.pesticidvarsling.dk
Kjær, J., Rosenbom, A. E., Olsen, P., Juhler, R. K., Plauborg, F.
, Grant, R., Nygaard, P., Gudmundsson, L. & Brüsch, W. (2008).
The Danish Pesticide Leaching Assessment Programme: Monitoring Results May 1999 - June 2007. Geological Survey of Denmark and Greenland.
Kjær, J., Rosenbom, A. E., Brüsch, W., Juhler, R. K., Gudmundsson, L.
, Plauborg, F., Grant, R. & Olsen, P. (2011).
The Danish Pesticide Leaching Assessment Programme: Monitoring results May 1999-June 2010. Geological Survey of Denmark and Greenland.
http://pesticidvarsling.dk/xpdf/vap-results-99-10.pdf
Wiik, E., Bennion, H., Sayer, C.
, Davidson, T. A., Clarke, S., Mcgowan, S., Prentice, S.
, Simpson, G. & Stone, L. (2015).
The coming and going of a marl lake: multi-indicator palaeolimnology reveals abrupt ecological change and alternative views of reference conditions.
Frontiers in Ecology and Evolution,
3(82).
https://doi.org/10.3389/fevo.2015.00082