C Z M Kimambo, development and performance of solar cooker. August 2007, Journal of Energy in Southern Africa, Vol 18 N.
Adachi, C. (2009). The adoption of residential solar photovoltaic systems in the presence of a financial incentive: A case study of consumer experiences with the Renewable Energy Standard Offer Program in Ontario (Canada) (Master’s thesis, University of Waterloo).
Less, C. T., & McMillan, S. (2005). Achieving the successful transfer of environmentally sound technologies: Trade-related aspects.
Smestad, G. Technological Aspect of Solar Energy.