1. D. S. McDarmaid:Met. Tech., 1978, vol. 5, p. 7.
2. R. O. Ritchie, M. H. C. Cedeno, V. F. Zackay, and E. R. Parker:Metall. Trans. A, 1978, vol. 9A, p. 35.
3. M. H. C. Cedeno: M. S. Thesis, Univ. of California, Berkeley, CA, 1977.
4. C. S. Carter:Corrosion, 1969, vol. 25, p. 423.
5. M. O. Speidel: IInt. Conf. on Hydrogen in Metals, Paris, France, May–June 1972, Paul Bastien, ed., Editions Science et Industrie, Paris, France, 1972, p. 290.