Photovoltaic system performance monitoring - Guidelines for measurement, data exchange and analysis (IEC 61724:1998); German version EN 61724:1998— 12 стр.
Photovoltaic devices - Part 2: Requirements for reference solar cells; Amendment 1 (IEC 60904-2:1989/A1:1998); German version EN 60904-2:1993/A1:1998— 3 стр.
Photovoltaic devices - Part 6: Requirements for reference solar modules; Amendment 1 (IEC 60904-6:1994/A1:1998); German version EN 60904-6:1994/A1:1998— 4 стр.