Thodberg L, Bauer B, Weidema B P, Cederberg C, Søndergaard H A, Løber M, Halberg N, Madsen N L, Nielsen P H, Kofoed S, Hvid S K – 2004 Produktorienteret miljøindsats i landbrugssektoren – forudsætninger. København: Miljøstyrelsen. (Miljøprojekt 900).
Nielsen P H, Tukker A, Weidema B P, Lauridsen E H, Notten P – 2004 Environmental impact of the use of natural resources. Seville: Institute for Prospective Technological Studies, European Commission DG Joint Research Centre. (Technical Report EUR 21485 EN)
Nielsen A M, Nielsen P H, Jensen J D, Andersen M, Weidema B P – 2004 Identification of processes affected by a marginal change in demand for food products – two examples on Danish pigs and cheese. Pp. 127-134 in N Halberg (ed.): Life Cycle Assessment in the Agri-food sector. Proceedings from 4th International Conference, 2003.10.6-8, Bygho
Nielsen P H, Nielsen A M, Weidema B P, Dalgaard R, Halberg N – 2003 LCA food data base. Tjele: Danish Institute of Agricultural Sciences
Calzoni J, Caspersen C, Dercas N, Gaillard G, Gosse G, Hanegraaf M, Heinzer L, Jungk N, Kool A, Korsuize G, Lechner M, Leviel B, Neumayr R, Nielsen A M, Nielsen P H, Nikolaou A, Panoutsou C, Panvini A, Patyk A, Rathbauer J, Reinhardt G A, Riva G, Smedile E, Stettler C, Weidema B P, Wörgetter M, van Zeijts H – 2000 Bioenergy for Europe: Which one fits best? A comparative analysis for the community. Heidelberg: IFEU – Institut für Energie- und Umweltforschung Heidelberg GmbH (Institute for Energy and Environmental Research Heidelberg).
Ekvall T, Person L, Ryberg A, Widheden J, Frees N, Nielsen P H, Weidema B P, Wesnæs M – 1998 Life cycle assessment on packaging systems for beer and soft drinks. Main report. Copenhagen: Danish Environmental Protection Agency. (Environmental Project 399)