1. E.H. Dix, Jr.:Trans. ASM, 1950, vol. 42, pp. 1057–1127.
2. A. J. Sedriks, P. W. Slattery, and E. N. Pugh:Trans. ASM, 1969, vol. 62, pp. 815–18.
3. W. Gruhl and D. Brungs:Metall., 1969, vol. 23, pp. 1020–26.
4. M. O. Speidel:Hydrogen in Metals, I.M. Bernstein and A. W. Thompson, eds.,ASM, Metals Park, OH, 1974, pp. 249–76.
5. M.O. Speidel:Metall. Trans. A, 1975, vol. 6A, pp. 631–50.