1. Littig, B., Grießler, G.E.: Social sustainability: a catchword between political pragmatism and social theory. Int. J. Sustain. Dev. 8, 65–79 (2005)
2. Murphy, K.: The social pillar of sustainable development: a literature review and framework for policy analysis. Sustain. Sci. Pract. Policy 8(1), 15–29 (2012)
3. UN: A World Charter for Nature. UN, New York (1982)
4. WCED: Our Common Future. World Commission on Environment and Development. Oxford University Press, Oxford (1987)
5. UN: Earth Summit Agenda 21. The United Nations programme of action from Rio. United Nations Department of Public Information, New York (1992)