1. Lancaster, J. F., Metallurgy of Welding, 1987, Allen and Unwin, pp. 206–209.
2. ASM Metals Handbook, Vol. I, 10th edn, Properties and Selection: Irons, Steels and High-Performance Alloys, 1990, p. 617.
3. Smithells, Metals Reference Book, Butterworth, 1983, p. 31-13.
4. Coe, F. R., Welding Steels Without Hydrogen Cracking, The Welding Institute, 1973.