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3. G. Neiber, Concentration of Stresses [in Russian], OGIZ, Moscow-Leningrad (1957).
4. P. Kuhn, ?Effect of the sizes on fatigue of notched parts,? Revue de Metallurgie,55, No. 9, (1958).
5. V. S. Ivanov and V. G. Kudryashov, ?Method of determining the rupturing viscosity [Kic] from fatigue tests on samples,? Problemy Prochnosti, No. 2 (1970).