1. 3) S. SHANKER, D.E. KOENING, and L.E. DARDI : J. Met., 33 (1981) 10, p. 13
2. 4) R.P. SEELING and R.J. STUEBER : High Temp-High Press., 10 (1978), p. 207
3. 5) S.R. LEVINE : Metall. Trans. A, 9A (1978) 9, p. 1237
4. 6) G.W. GOWARD : J. Met., 25 (1973) 10, p. 31
5. 7) S.R. LEVINE : NASA TM-73877 (1978)