1. Solow, R. M. [Resources for the Future] An Almost Practical Step Toward Sustainability. Res. Pol. 19, 162–172 (1993).
2. Fuwa, K. [Defining and Measurement of Sustainability: The Biophysical Foundations in Defining and Measuring Sustainability. The Biogeophysical Foundation [Mohan Munasinghe, Walter Shearer, (Eds.)] (Washington D.C., 1995).
3. Clayton, A. M. H. & Radcliffe, N. J. Sustainability: A systems approach (Earthscan Publications Limited, London, 1997).
4. Tester, J. W. et al. Sustainable Energy (M.I.T. Press, Cambridge Massachusetts, 2005).
5. World Commission on Environment and Development (WCED). Our Common Future (Oxford University Press, New York, 1987).