1. E.F. Bruhn, “Analysis and design of flight structure”, 1973.
2. F. Erdogan, Crack Propagation Theories. NASA CR-901 (1967).
3. J. P. Gallagher, What the designer should know about the fracture mechanics fundamentals. Paper 710151 presented at SAE Automotive Engng Cong., Detroit (January 1971).
4. Stress analysis of fuselage cut-out of a transport aircraft- by Sartaj Patel1, Mahesha. K2, Harish E.R.M3.
5. P. M. Toor (Ed.), Fracture Mechanics Methodology and Analytical Procedures. SMN-366 Rev. A, Lockheed-Georgia Co. (1972).