doi> Wills, W.; Rovere, E.L.L.. Light vehicle energy efficiency programs and their impact on Brazilian CO2 emissions. Energy Policy, Volume 38, Issue 11, November 2010, Pages 6453-6462.
doi> Wills, W.; Rovere, E.L.L.. Light vehicle energy efficiency programs and their impact on Brazilian CO2 emissions. Energy Policy, Volume 38, Issue 11, November 2010, Pages 6453-6462.