GOST R 56980-2016 Crystalline silicon terrestrial photovoltaic modules. Test methods
GOST R IEC 60904-1-2013 Photovoltaic devices. Part 1. Measurement of photovoltaic current-voltage characteristics
GOST R IEC 60904-3-2013 State system for ensuring the uniformity of measurements. Photovoltaic devices. Part 3. Measurement principles of photovoltaic devices characteristics with terrestrial reference spectral irradiance data