1. J. J. Schirra, R. H. Caless and R. W. Hatala, in Proceedings of the Conference on 718 Alloy, 1991, edited by E. A. Loria, p. 375.
2. W. J. Mills, in ?Superalloy 718, metallurgy and applications?, edited by E. A. Loria (The Minerals, , Metals and Materials Society, 1989) p. 517.
3. R. G. Carlson and J. F. Radvich, ibid. p. 79.
4. S. M. Jones, J. Radavich and S. Tian, ibid. p. 589.