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2. Energy Technology Perspectives 2014: Harnessing Electricity's Potential (IEA, 2014).
3. PVPS Report Snapshot of Global PV 1992–2013 (IEA, 2014).
4. Global Market Outlook for Photovoltaics 2014–2018 (European Photovoltaic Industry Association, 2014).
5. Technology Roadmap: Solar Photovoltaic Energy 2014 (IEA, 2014).