Venetoulis, Jason; Talberth, John (5 January 2007). "Refining the ecological footprint". Environment, Development and Sustainability. 10 (4): 441–469. doi:10.1007/s10668-006-9074-z. S2CID153900117.
Hopton, Matthew E.; White, Denis (2012). "A simplified ecological footprint at a regional scale". Journal of Environmental Management. 111: 279–286. doi:10.1016/j.jenvman.2011.07.005. PMID22033065.
Hopton, Matthew E.; White, Denis (2012). "A simplified ecological footprint at a regional scale". Journal of Environmental Management. 111: 279–286. doi:10.1016/j.jenvman.2011.07.005. PMID22033065.
Venetoulis, Jason; Talberth, John (5 January 2007). "Refining the ecological footprint". Environment, Development and Sustainability. 10 (4): 441–469. doi:10.1007/s10668-006-9074-z. S2CID153900117.