1. AEA, Cranfield University, Moorhouse E, Paul Watkiss Associates, AHDBMS, Marintek (2008) Comparative life cycle assessment of food commodities procured for UK consumption through a diversity of supply chains. Final report for Defra project FO0103, 18 pp and Appendices. http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&ProjectID=15001&FromSearch=Y&Publisher=1&SearchText=FO0103&SortString=ProjectCode&SortOrder=Asc&Paging=10#Description
2. Barber A, Lucock D (2006) Total energy indicators: benchmarking organic, integrated and conventional sheep and beef farms. Research report number 06/07, ARGOS. Downloaded from www.argos.org.nz
3. Biel A, Bergström K, Carlsson-Kanyama A, Fuentes C, Grankvist G, Lagerberg Fogelberg C, Shanahan H, Solér C (2006) Environmental information in the food supply system. Report number, ISRN FOI-R-1903-SE. Swedish Defence Research Agency, Defence Analysis, Stockholm, 117 pp
4. Billiard (2005) Refrigerating equipment, energy efficiency and refrigerants. http://www.iifiir.org/en/doc/1059.pdf
5. Blanke MM, Burdick B (2005) Food (miles) for thought: energy balance for locally-grown versus imported apple fruit. Environ Sci Poll Res 12:125–127