1. IEA World Energy Outlook 2012 (International Energy Agency, 2012).
2. Buchner, B., Falconer, A., Hervé-Mignucci, M. & Trabacchi, C. The Landscape of Climate Finance 2012 (Climate Policy Initiative, 2012).
3. Brealey, R. A. & Myers, S. C. Principles of Corporate Finance 6th edn (McGraw-Hill, 2000).
4. MIGA World Investment and Political Risk 2012 (World Bank Group, 2012).
5. Schneider, F. & Frey, B. S. World Dev. 13, 161–175 (1985).