1. The U.S. Department of Energy photovoltaic program for 1987;Prince,1986
2. PV activities of the European Community;Palz,1986
3. Photovoltaic effect in p-n junctions;Cummerow;Phys. Rev.,1954
4. New equivalent diagram of solar cells (engineering point of view);Slonim;Solid-State Electron.,1978
5. Novel equivalent diagram of a solar cell;Slonim,1985