1. Akroyd, S., Duncan, A., 1998. The sector approach and sustainable rural livelihoods. In: Carney, S. (Ed.), Sustainable Rural Livelihoods. What Contribution Can We Make? Department for International Development, London.
2. Growth and institutions: a review of the evidence;Aron;World Bank Res. Obs.,2000
3. Batchelor, C., Cain, J., Farquharson, F., Roberts, J., 1997. Improving water utilization from a catchment perspective. SWIM Paper 4. International Water Management Institute, Colombo, Sri Lanka.
4. Cohen, S., Burgiel, S.W. (Eds.), 1998. Exploring biodiversity indicators and targets under the Convention on Biological Diversity. Biodiversity Action Network (BIONET), Washington, and International Union for Conservation of Nature and Natural Resources (IUCN), Gland, Switzerland and Cambridge, UK, 18+150 pp. (appendix).
5. Quality-of-life assessment: can we keep it simple (with discussion)?;Cox;J. R. Statist. Soc. A,1992