1. report in preparation for the World Bank;IT Power,1991
2. Derrick A., et al, ‘Solar Photovoltaic Products’, I T Publications, London, 1991.
3. prepared for US Comm. on Renewable Energy;Merian Corp./I T Power,1990
4. McNelis, B., & Derrick, A., ‘Photovoltaic Water Pumping: Experience to 1986’, Euroforum New Energies Congress, Saarbrucken, Germany, 1988.
5. prepared under CEC project number;IT Power,1988