1. Comparison of some standard PV simulation programs with the simulation system INSEL;Beyer,1991
2. Utilization of satellite data for the assessment of large scale PV grid integration;Beyer,1992
3. Grid integration of roof mounted PV systems at high penetration rates;Beyer,1994
4. The German 1000-roofs-PV programme — a résumé of the 5 years pioneer project for small grid-connected PV systems;Erge,1998
5. SATELLIGHT: a WWW Server which provides high quality daylight and solar radiation data for western and central Europe;Foyntonant,1998