1. Barrett, J., Scott, A., 2001. An Ecological Footprint of Liverpool – A Detailed Examination of Ecological Sustainability. Stockholm Environmental Institute, York.
2. Barrett, J., Scott, A., Vallack, H., 2001. The Ecological Footprint of Passenger Transport in Merseyside. Stockholm Environmental Institute, York.
3. Description and application of the EAP computer program for calculating life-cycle energy use and greenhouse as emissions of household consumption items;Benders;International Journal of Environment and Pollution,2001
4. Birch, R., Barrett, J., Wiedmann, T., 2004. Ecological Footprint of Inverness. Stockholm Environmental Institute, York.
5. Embodied energy analysis and EMERGY analysis: a comparative view;Brown;Ecological Economics,1996