Biblio

A. Derrick, Francis, C., and Bokalders, V., Solar photovoltaic products : a guide for development workers, Rev.ed. London, UK: IT Publications, 1991, p. 127 p.: fig., ill., tab.

B. McNelis and Derrick, A., “Solar water pumping : clean water for rural areas”. IT Power, Eversley, UK, p. [19] p.: fig., 1989.

B. McNelis, Derrick, A., and Starr, M., Solar-powered electricity : a survey of photovoltaic power in developing countries. London, UK: IT Publications, 1988.