1. Agee, JK (1999) Science review. In: KN Johnson, F Swanson, M Herring and S Greene (eds.), Bioregional assessments: Science at the crossroads of management and policy. Washington, DC: Island Press, pp. 288–292.
2. Alcott, B (2005) Jevons’ paradox. Ecological Economics 54(1): 9–21.
3. Balter, M (2013) Strongest evidence of animal culture seen in monkeys and whales. Science 25 April. Available at: http://www.sciencemag.org/news/2013/04/strongest-evidence-animal-culture-seen-monkeys-and-whales .
4. Beck, U (2006) Living in the world risk society. Economy and Society 35: 329–345.
5. Bekoff, M (2013) Do animals know who they are?. LiveScience, 19 September. Available at: http://www.livescience.com/39803-do-animals-know-who-they-are.html .