Magnetic materials - Part 8-6: Specifications of individual materials - Soft magnetic metallic materials (IEC 60404-8-6:1999 + A1:2007) (english version)
Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range of 20 Hz to 200 kHz by the use of ring specimens (IEC 60404-6:2003) (english version)