Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame (IEC 60404-2:1996 + A1:2008) (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 20 Hz to 100 kHz by the use of ring specimens ((IEC 60404-6:2018 + COR1:2018) EN IEC 60404-6:2018) (english version)
