1. G.H. Gessinger, M.J. Bomford, International Metallurgical Reviews, (1974) 19, pp. 51–76
2. V.A. Tracey, C.P. Cutler, Powder Metallurgy, (1981) N° 1, pp. 32–40
3. P. Wildgoose, N.G. Turner, H.F. Davies, B.J. Helliwell, R. Ubank, H. Harrison, Powder Metallurgy, (1981) N°2 pp. 75–86
4. G.H. Gessinger, Powder Metallurgy Superalloys, Zürich International Conference, Nov. (1980), MPR, Shrewsbury, Vol. 2, pp. 1–1 to 1–41
5. J.K. Tien, W.J. Boesch, W. Castledine, ibid, pp. 16–1 to 16–23