1. Kawasaki Steel Corp., Magnetic Steel Sheet and Strip Catalog, 1987, p 13
2. Ugine, Electrical Steel Sheet Catalog, 1990, p 28–39
3. NKK Corp., NKK’s Magnetic Steel Sheet and Strip Catalog, 1990, p 6
4. Surahammars Bruk Catalog, 1987, p 7
5. Magnetic Materials, Part 8, Specification for Individual Materials, Section Four—Specification for Cold Rolled Non-Oriented Magnetic Steel Sheet and Strip, IEC Publication 404-8-4, International Electrotechnical Commission, Genf, Switzerland, 1986, p 24–25