← Full bibliography
Harper, Gavin D. J. 2020. Batteries as an energy source. Salem Press / EBSCO. https://www.ebsco.com/research-starters/chemistry/batteries-energy-source.
Harper, Gavin D. J. 2019. “Open Innovation.” In Salem Press Encyclopedia (EBSCO Research Starters), Salem Press. https://www.ebsco.com/research-starters/business-and-management/open-innovation.
Harper, Gavin D. J. 2019. “Porter's Five Forces.” In Salem Press Encyclopedia (EBSCO Research Starters), Salem Press. https://www.ebsco.com/research-starters/business-and-management/porters-five-forces.
Harper, Gavin D. J. 2015. “CIGS Solar Cell.” In Encyclopædia Britannica [online], Encyclopædia Britannica. https://www.britannica.com/technology/CIGS-solar-cell.
Harper, Gavin D. J. 2015. “Cadmium Telluride Solar Cell.” In Encyclopædia Britannica [online], Encyclopædia Britannica. https://www.britannica.com/technology/cadmium-telluride-solar-cell.
Harper, Gavin D. J. 2015. Innovation (Salem Press Encyclopedia). Salem Press. https://www.ebsco.com/research-starters/business-and-management/innovation.
Harper, Gavin D. J. 2015. Solar oven (Encyclopædia Britannica). Encyclopædia Britannica. https://www.britannica.com/topic/solar-oven.
Harper, Gavin D. J. 2013. “Mixed methods research.” In Salem Press Encyclopedia (EBSCO Research Starters), Salem Press / EBSCO. https://www.ebsco.com/research-starters/social-sciences-and-humanities/mixed-methods-research.
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