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Ain Shams Engineering Journal > 2015 > 6 > 2 > 541-551
International Journal of Electrical Power and Energy Systems > 2012 > 43 > 1 > 245-254
Energy Policy > 2009 > 37 > 5 > 1660-1677
Renewable Energy > 2006 > 31 > 10 > 1573-1580