1. Bearing pressures and cracks;Westergaard;J App Mech Trans ASME,1939
2. Rooke DP, Cartwright DJ. Compendium of stress intensity factors. Procurement Executive, Ministry of Defence, H. M. S. O. U.K; 1976.
3. Principles of fracture mechanics;Sanford,2003
4. Fracture mechanics: fundamentals and applications;Anderson,2006