1. Optimisation d'une station de pompage alimentee par generateur photovoltaique;Barland,1977
2. Calculations and in situ experimental data on a water pumping system directly connected to a 1/2 kW photovoltaic converter array;Rogers,1977
3. Determination of solar cell equation parameters from empirical data;Braunstein;Energy Conv.,1977
4. Principles of a Direct-Current Machine;Langsdorf,1959