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4. D. Taplin, Mechanics of Fracture: Fracture of Metals [Russian translation], Mir, Moscow (1979).
5. M. Reich and E. P. Esztergar, ?Application of fracture mechanics methods in safety analysis of piping components in subcreep and creep behavior,? Nucl. Eng. Des.,51, No. 2, 177?231 (1978).