1. Hadfields Ltd:Manganese Steel, Oliver and Boyd, Edinburgh, 1956, p. 2.
2. G. Collette, C. Crussard, A. Kohn, J. Plateau, G. Pomey, and M. Weisz:Rev. Metall., 1957, vol. 54, p. 433.
3. J. Spreadborough:Acta Cryst., 1960, vol. 13, p. 603.
4. C. White and R. W. K. Honeycombe:J. Iron Steel Inst., 1962, vol. 200, p. 457.
5. W. N. Roberts:Trans. TMS-AIME, 1964, vol. 230, p. 372.