1. 3I Group plc (2006) corporate responsibility report, 2006. Available at: http://www.3i.com.CR_report_withcover.pdf.
2. An examination of consumer demand in the secondary niche market for fuel cell vehicles in Europe;Adamson;International Journal of Hydrogen Energy,2003
3. Government policy and the development of electric vehicles in Japan;Ahman;Energy Policy,2006
4. Substitution between energy, capital and labour within industrial companies: A micro panel data analysis;Arnberg;Resource and Energy Economics,2007
5. Aviva (2006) Corporate Social Responsibility Report, 2006. http:/www.aviva.com/csr06/index.asp.