1. AEA (2010) Guidelines to Defra/DECC's GHG Conversion Factors for Company Reporting. October 2010.
2. AECOM (2011a) Emissions Benchmarking: Considering the Viability of Water Freight Study. www.freightbestpractice.org.uk. March 2011. UK Department for Transport.
3. AECOM (2011b) Rail Benchmarking. www.freightbestpractice.org.uk. March 2011. UK Department for Transport.
4. Baker, H., Cornwell, R., Koehler, E. and Patterson, J. (2010) Review of Low Carbon Technologies for Heavy Goods Vehicles. March 2010. Prepared by Ricardo (approved by N Powell) for UK Department for Transport.
5. Clarke, G., Kalles, M.v. and AECOM (2011) Emissions Benchmarking: Considering the Viability of Rail Freight Study. www.freightbestpractice.org.uk. UK Department for Transport.