1983IEC 60367-2/AMD1:1983 Cores for inductors and transformers for telecommunications. Part 2 : Guides for the drafting of performance specifications
1974IEC 60367-2:1974 Cores for inductors and transformers for telecommunications. Part 2 : Guides for the drafting of performance specifications
IEC 60367-2/AMD1:1983 Cores for inductors and transformers for telecommunications. Part 2 : Guides for the drafting of performance specifications was changed to IEC 62044-3:2000 Cores made of soft magnetic materials - Measuring methods - Part 3: Magnetic properties at high excitation level.