1. World Economic Forum. (2011) The future of long-term investing,
http://www3.weforum.org/docs/WEF_FutureLongTermInvesting_Report_2011.pdf
, accessed 16 March 2012.
2. Infrastructure investment in the context of this article means investment in unlisted infrastructure equity.
3. Inderst, G. (2010) Infrastructure as an asset class. EIB Papers 15 (1): 70–105.
4. Preqin. (2010) Infrastructure: Lost in transition? Investor survey results. Infrastructure Spotlight August.
5. Beeferman, L. (2008) Pension Fund Investment in Infrastructure: A Resource Paper. Occasional Paper Series No. 3, pp. 1–78.