1. DOD, MIL-A-83444, USAF Damage Tolerant Design Handbook:Guidelines for the Analysis and Design of Damage Tolerant Aircraft Structures, Department of Defense, Washington, D.C., 1974.
2. Aircraft Structural Integrity Program (ASIP) – (http://asipcon.com).
3. Rummel, W.D., P.H. Todd, Jr., R.A. Rathke and W.L. Castner, “The Detection of Fatigue Cracks by Nondestructive Test Methods,” Materials Evaluation, Vol. 32, No. 10, October 1974, pp. 205-212.
4. DOD, MIL-HDBK-5J, DEPARTMENT OF DEFENSE HANDBOOK: METALLIC MATERIALS AND ELEMENTS FOR AEROSPACE VEHICLE STRUCTURES (31 JAN 2003).
5. NASA, NASA-STD-5009, Nondestructive Evaluation Requirements for Fracture Critical Metallic Components, National Aeronautics and Space Administration, Washington, D.C., 2008.