BS EN 60404-8-5. Magnetic materials. Part 8-5. Specifications for individual materials. Electrical steel strip and sheet with specified mechanical properties and magnetic permeability— 22 стр.
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)