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e & i Elektrotechnik und Informationstechnik > 2002 > 119 > 5 > 170-177
Renewable and Sustainable Energy Reviews > 2018 > 81 > P1 > 192-204
Electric Power Systems Research > 2010 > 80 > 4 > 380-389
International Journal of Electrical Power and Energy Systems > 2007 > 29 > 8 > 600-608