1. International Electrotechnical Commission IEC 404–2, 1992, Part 2 Methods of measurement of the magnetic properties of electrical steels sheet and strip by means of an Epstein frame.
2. D.C. Dieterly, D-C permeability testing on Epstein samples with double lap joints, in: Symposium on Magnetic Testing 1948, Presented at the 51st Annual Meeting of the American Society for Testing Materials, Detroit, MI, June 22, 1948, Special Technical Publication No. 85, Philadelphia.
3. Determination of AC magnetic power loss of electrical steel sheet: Present status and trends
4. The measurement of magnetic properties of electrical sheet steel – survey on methods and situation of standards
5. A Method for Defining the Mean Path Length of the Epstein Frame