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\bibitem{Maes+VanPassel2012} {\textquotedblleft}\textit{Interference of regional support policies on the economic and environmental performance of a hybrid cogeneration-solar panel energy system}{\textquotedblright}. Maes D, Van Passel S, Energy Policy \textbf{42}, 670 (2012).   http://doi.org/10.1016/J.ENPOL.2011.12.044

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