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3. ASTM STP,1992
4. S. Suresh and R.O. Ritchie: Int. Met. Rev., 1984, vol. 29, pp. 445–76.
5. J. Lankford and D.L. Davidson: in Small Fatigue Cracks, R.O. Ritchie and J. Lankford, eds., TMS-AIME, Warrendale, PA, 1986, pp. 51–71.