2015DIN EN 60904-2:2015 Photovoltaic devices - Part 2: Requirements for photovoltaic reference devices (IEC 60904-2:2015); German version EN 60904-2:2015
2008DIN EN 60904-2:2008 Photovoltaic devices - Part 2: Requirements for reference solar devices (IEC 60904-2:2007); German version EN 60904-2:2007
1993DIN EN 60904-2:1995 Photovoltaic devices — Part 2: Requirements for reference solar cells