1. AISBL, 2009. How to avoid an electric shock. Electric cars: from hype to reality. European Federation for Transport and Environment, Brussels, Belgium.
2. The peak of the oil age—analyzing the world oil production reference scenario in world energy outlook 2008;Aleklett;Energy Policy,2010
3. Angerer, G., 2009. Raw materials for emerging technologies, the case of Lithium. Conference Eco-Efficient Economy Seminar on Raw Materials—A Scare Resource in a Sustainable World. Linköping, 3 November 2009
4. ASPO, 2008. ASPO Newsletter no. 95. November 2008 〈http://www.aspo-ireland.orgwww.aspo-ireland.org〉.
5. ASPO, 2009. ASPO Newsletter no. 100. April 2009 〈http://www.aspo-ireland.orgwww.aspo-ireland.org〉.