1. O. E. Wheeler (1972) Spectrum loading and crack growth, J. Bas. Engng, 94, 181–186.
2. W. Schutz (1989) Standarised stress - time histories - An overview, In Development offatigue loading spectra, ASTM STP 1006.
3. P. J. Bernard, T. C. Lindley and C. E. Richards (1976) Mechanisms of overload retardation during fatigue crack propagation, in Fatigue Crack Growth Under Spectrum Loads, ASTM STP 595, 78–97.
4. R.E. Jones (1973) Fatigue crack growth retardation after a single cycle peak overload in Ti-6A1–4V titanium alloy, Engrg. Fract. Mechanics, 5, 585–604.
5. J. Lankford and D. L. Davinson (1976) Fatigue crack tip plasticity associated with overloads and susequent cycling, J. Engrg. Mater. Techn., January volume, 17–23.