1. M. M. Klyuev and Yu. M. Mironov; Akad, Nauk, SSSR, Inst. Met. A. A. Baikov, Fiz. Khim. Osnovy Prozy Stali, 1967, pp. 256–260.
2. J. S. Liddle; Electrical Steels Research Dept., British Steel Corp., South Wales Group, Newport, 1969. Report No.45/E.
3. J. F. Lowery; Welding Institute Research Report P/32/68.
4. H. Maeker; Z. Physik 1955, Vol. 141, pp. 198–216, (English Transl. AEI. T/895 July 1955.)
5. I. A. Garevskikh et al.; Stal (In English) 1962, Vol. 1, p. 32.