1. Metals hand book. 10th ed., vol. 10. Metals Park (OH): ASM; 1990. p. 862.
2. Metals hand book. 8th ed., vol. 7. Metals Park (OH): ASM; 1972. p. 152.
3. Fatigue of materials;Suresh,1998
4. Deformation and fracture mechanics of engineering materials;Herzberg,1996
5. Propagation of short fatigue cracks