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2. Inhttp://www1.eere.energy.gov/vehiclesandfuels/about/partnerships/freedomcar/index.html; Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, 2009.
3. Inhttp://www.er.doe.gov/bes/reports/abstracts.html#EES; Basic Energy Sciences, 2008.
4. Helical microtubules of graphitic carbon