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Comparing Photovoltaic (PV) Costs and Deployment Drivers in the Japanese and U.S. Residential and Commercial Markets. National Renewable Energy Laboratory (NREL), 2014..
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"Tracking US photovoltaic system prices 1998-2012: a rapidly changing market." Progress in Photovoltaics: Research and Applications (2014) n/a - n/a..
"Quantifying non-hardware balance of system costs for photovoltaic installations in the United States using a combined annual expenditure-labor hour productivity approach." 2012 38th IEEE Photovoltaic Specialists Conference. Austin, TX, USA: IEEE, 2012. 001762 - 001767..