1. Kyoto Protocol, Proceedings of the Conference of the United Nations on the Climate Change, 2000.
2. EU Green Paper “Towards a European Strategy for the Security of Energy Supply”, November 2000.
3. Well-to-wheels analysis of future automotive fuels and powertrains in the European context, EUCAR, CONCAWE, JRC, November 2003.
4. Handbook of Batteries;Linden,2002