Halberg, N., Weidema, B., Larsen, I.
, Dalgaard, R., Nielsen, P. H. & Nielsen, A. M. (2004).
Life cycle based environmental management and product declarations for food. I G. Schiefer & U. Rickert (red.),
Quality assurance, risk management and environmental control in agriculture and food supply networks University of Bonn.
Denny, M. J. H.
, Clausen, P., Percival, S. M., Anderson, G. Q. A., Koffijberg, K. & Robinson, J. A. (2004).
Light-bellied Brent Goose Branta bernicla hrota [East Atlantic population] in Svalbard, Greenland, Franz Josef Land, Norway, Denmark, The Netherlands and Britain 1960/61 - 2000/01. The Wildfowl and Wetlands Trust/Joint Nature Conservation Committee, Slimbridge.
http://www.wwt.org.uk/pdfs/Waterbird%20Review%20Series%20Svalbard%20Light-bellied%20Brent%20Goose.pdf
Robinson, J. A., Colhoun, K., Gudmundsson, G. A.
, Boertmann, D., Merne, O. J., O'Brian, M., Portig, A. A., Mackie, K. & Boyd, H. (2004).
Light-bellied Brent Goose Branta bernicla hrota [East Canadian High Arctic population] in Canada, Ireland, Iceland, France, Greenland, Scotland, Wales, England, the Channel Islands and Spain: 1960/61 - 1999/2000. The Wildfowl and Wetlands Trust/Joint Nature Conservation Committee, Slimbridge.
Brauner, C. J.
, Wang, T., Wang, Y., Richards, J. G., Gonzalez, R. J., Bernier, N. J., Xi, W., Patrick, M. & Val.A.L. (2004).
Limited extracellular but complete intracellular acid-base regulation during short-term environmental hypercapnia in the armoured catfish, Liposarcus pardalis.
Journal of Experimental Biology,
207, 3381-3390.
Kronvang, B., Larsen, S. E., Jensen, J. P.
, Andersen, H. E., Barr, A. & Sugrue, R. (2004).
Lough Derg and Lough Ree, Ireland: Trend analysis, Retention and Source Apportionment. Catchment report. Norwegian Institute for Water Research (NIVA).
Hertel, O., Løfstrøm, P., Jensen, S. S., Brocas, M.
, Hvidberg, M., Frydendall, J., Ambelas Skjøth, C.
& Palmgren, F. (2004).
Luftforurening fra trafik, industri og landbrug i Frederiksborg Amt. Danmarks Miljøundersøgelser, Aarhus Universitet. Faglig rapport fra DMU Bind 503
http://www2.dmu.dk/1_Viden/2_Publikationer/3_Fagrapporter/rapporter/fr503.pdf
Jensen, S. S., Løfstrøm, P., Berkowicz, R.
, Olesen, H. R., Frydendall, J., Fuglsang, K. & Hummelshøj, P. (2004).
Luftkvalitet langs motorveje: Målekampagne og modelberegninger. Danmarks Miljøundersøgelser, Aarhus Universitet. Faglig rapport fra DMU Bind 522
http://www2.dmu.dk/1_Viden/2_Publikationer/3_Fagrapporter/rapporter/FR522.pdf
Hansen, L. M., Esbjerg, P., Nielsen, G. C., Larsen, B. & Scheel, C. (2004).
Majsrodbillen.
Grøn Viden - Markbrug, (301), 1-6.