1. N. P. Goss, US Patent No. 1,965,559, Issued July 3, 1934.
2. R. P. Dunkle, R. H. Goodenow, in: ASM Materials Week Conference, Orlando, Florida, 4–9 October, 1986, pp. 41–54.
3. in: 18th Conference on Properties and Application of Magnetization of Materials;Hilinski,1999
4. ASTM Standard A683/A683M-99, Standard Specification for Nonoriented Electrical Steel Semiprocessed Types, (ASTM 2004).
5. Lamination Steels, second Ed., EMERF, 2002.