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2. O. Buck and B. R. Tittmann,Advances in Crack Length Measurement C. J. Beevers, ed. (Engineering Materials Advisory Services (EMAS), Cradley Health, Warley, West Midlands U. K., 1982), p. 413.
3. W. Elber,Damage Tolerance in Aircraft Structures (ASTM STP 486, 1971), p. 230.
4. C. Q. Bowles and J. Schijve,Fatigue Mechanisms: Advances in Quantitative Measurement of Physical Damage (ASTM STP 811, 1983), p. 400.
5. O. Buck, J. D. Frandsen, and H. L. Marcus,Fatigue Crack Growth Under Spectrum Loads (ASTM STP 595, 1976), p. 101.