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2. ??Idem, J. Mater. Sci. 17 (1982) 785.
3. I. Finnie andW. R. Heller, ?Creep of Engineering Materials? (McGraw-Hill, New York, 1959) p. 114.
4. F. Garofalo, ?Fundamentals of Creep and Creep-Rupture in Metals? (Macmillan, New York, 1965).
5. F. K. G. Odqvist, ?Mathematical Theory of Creep and Creep Rupture?, 2nd Edn (Clarendon, Oxford, 1974), Ch. 10, pp. 131?140.