Letter symbols to be used in electrical technology —
Part 3: Logarithmic quantities and units
National foreword
Scope and Introduction
1 Logarithmic quantities
2 Units for logarithmic quantities
3 Numerical values of logarithmic quantities
4 Logarithmic quantities with units
5 Notation for expressing the reference of a level
Annex ZA (normative) Normative references to international publications with their corresponding European publications
National annex NA (normative) Amendment 1 to International Standard IEC 60079-3:1989