1. 1) E.C. Bain, M.A. Grossmann, J.I.S.I., 110 (1924), 249
2. 2) M.A. Grossmann, E.C. Bain, High Speed Steel, (1931), 169
3. 3) A. Westgren, G. Phragmen, A.S.S.T., 13 (1928), 539
4. 4) J.P. Gill, A.S.M., 24 (1936), 735
5. 7) D.J. Blickwede, M. Cohen, J. Metals, 1 (1949), 578