1. P. D. Hess and G. K. Turnbull:Hydrogen in Metals, pp. 277–87, Proc. Conf., I. M. Bernstein and A. W. Thompson, eds., ASM, 1974.
2. D. E. J. Talbot and D. A. Granger:J. Inst. Metals, 1963-64, vol. 92, pp. 290- 97.
3. C. E. Ransley and H. Neufeld:J. Inst. Metals, 1948, vol. 74, pp. 599–620.
4. R. W. Ruddle and A. Cibula: Inst. of Metals Monograph and Report, no. 22, 1965.
5. C. E. Ransley and D. E. J. Talbot:J. Inst. Metals, 1955-56, vol. 84, pp. 445–52.