GOST R IEC 60027-3-2016 State system for ensuring the uniformity of measurements. Letter symbols to be used in electrical technology. Part 3. Logarithmic and related quantities and units of measurement
1970GOST R IEC 60027-3-2016 State system for ensuring the uniformity of measurements. Letter symbols to be used in electrical technology. Part 3. Logarithmic and related quantities and units of measurement