1. Energy, environment and sustainable development: a UK perspective;Hammond;Trans IChemE Part B: Process Safety Environ Protect,2000
2. Our ecological footprint;Wackernagel,1996
3. People, planet and prosperity: the determinants of humanity’s environmental footprint;Hammond;Nat Resour Forum,2006
4. Cranston GR, Hammond GP, Johnson RC. Ecological debt: exploring the factors that effect national footprints. J Environ Policy Plann; in press.
5. Global footprint network ecological footprint: overview global footprint network. [accessed 26.10.06.].