1. H. L. Eiselstein, “Age-Hardenable Nickel Alloy”, U. S. Patent 3,046,108, July 24. 1962.
2. J. F. Barker, E. W. Ross, and J. F. Radavich, “Long-Time Stability of Inconel 718”, General Electric Company Report No. R67FPD379, January 5, 1968.
3. H. L. Eiselstein, “Metallurgy of a Columbium-Hardened Nickel-Chromium-Iron Alloy”, ASTM STP No. 369, (1965).
4. J. F. Radavich, Private communication.