1. Tiffany, C.F., Cowie, W.D.: Progress on the ENSIP approach to improved structural integrity in gas turbine engine/an overview. (ASME), 1978, 78-WA/GT-13; presented at the Winter Annual Meeting, San Francisco, CA.
2. Cowie, W.D., Stein, T.A.: Damage tolerant design and test considerations in the engine structural integrity program. (AIAA), 1980; presented at the propulsion session of the 21st Structures, Structural Dynamics, and Materials Conference in Seattle, WA.
3. King, T.T., Cowie, W.D., and Reimann, W.H.: Damage tolerance concepts for critical engine components. 1984; presented at the Agard Conference, San Antonio, TX.
4. Military Standard, Engine Structural Integrity Program (ENSIP), MIL-STD-1783 (USAF) dated 30 November 1984.