Harmonized system of quality assessment for electronic components; basic specification: basic testing procedures and measuring methods for electromechanical components
Sectional specification for connectors; rectangular connectors for frequencies below 3 MHz; general requirements and guide for the preparation of detail specifications— 11 стр.
Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units (IEC 60027-3:2002); German version HD 60027-3:2004