1. Hand book on solar water pumping. UNDP Project GLO/80/003, World Bank, United Nations;Halcrow,1984
2. Experience results and techno-economic feasibility of using photovoltaic generators instead of diesel motors for water pumping from rural desert wells in Jordan;Mahmoud;IEE Proc,1990
3. Analysis for water pumping systems;van Overstraeten;Solar Wind Technol,1984
4. A powered system for medium-head pumping;Pulfrey;Solar Energy,1987
5. KSB-Pump catalogue issued 1/1/1998, Frankenthal-Germany.