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2. P. B. Hirsch, ?Internal Stresses and Fatigue in Metals?, (Elsevier, New York, 1958) p. 139.
3. P. R. Swann, Corrosion 19 (1963) 102.
4. A. Grot and J. E. Spruiell, Met. Trans. 6A (1975) 2023.
5. E. J. Herrera, B. Ramaswamy and D. R. F. West, J. Iron Steel Inst. 221 (1973) 229.