1. Rosenblum L. Practical aspects of photovoltaic technology. Applications and cost, NACA CR-174963, August, 1985
2. Dynamic simulation of solar pumping system;Lowarance;Renewable Energy,1992
3. Analysis of solar radiation measurements at San'a (15°N 44°E);Salem;Solar and Wind Technology Journal,1988
4. Abd El-Salam EM. In: Proceedings of the International Symposium. Workshop on Solar Energy, Cairo, Egypt, June 16–22, 1978. 1. p. 90–101
5. A design method for photovoltaic/storage systems under tropical conditions;Salem;International Journal of Ambient Energy,1987