1. 1) J. HOCHMANN, A. DESESTRET, P. JOLLY, and R. MAYOUD: Métaux, (1975) No. 593, p.1
2. 2) S. FLOREEN, and H.W. HAYDEN: Trans. ASM, 61 (1968), p.489
3. 6) F.G.E. BEETGE and F.P.A. ROBINSON: Metal. Mat. Met. Rev., 9 (1973), p.408
4. 9) H.W. HAYDEN and S. FLOREEN: Trans. ASM, 61 (1968), p.474
5. 10) A. PLUMTREE and R. GUILLBERG: J. Testing Eval., 2 (1974), p.331