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2. D. H. Avery and W. A. Backofen, Nucleation and Growth of Fatigue Cracks, Fracture of Solids, Interscience Publishers, New York (1963).
3. J. C. Grosskreutz, A. Critical Review of Micromechanisms in Fatigue, Fatigue—An Interdisciplinary Approach, Syracuse University Press, Syracuse (1964).
4. C. Laird and G. C. Smith, Crack Propagation in High Stress Fatigue. The Philosophical Magazine, 7 (1962) 847.
5. E. P. Dahlberg, Fatigue-Crack Propagation in High-Strength 4340 Steel in Humid Air, Transactions of the ASM, 58 (1965) 46.