1. O. D. Gonzalez:Trans. TMS-AIME, 1969, vol. 245, p. 607.
2. H. G. Nelson and J. E. Stein:Gas Phase Hydrogen Permeation through Alpa Iron, 4130 Steel and 304 Stainless Steel from Less than 100°C to Near 600°C, NASA TND-7265, 1972.
3. R. A. Oriani:Proceedings of the Symposium on Stress Corrosion, Columbus, Ohio, September, 1967.
4. R. A. Oriani:Acta Met., 1970, vol. 18, p. 147.
5. H. H. Podgurski and R. A. Oriani:Met. Trans., 1972, vol. 3, p. 2055.