1. Ph. Maitrepierre, D. Thivellier, and R. Tricot,Metall. Trans. A 6, 287 (1975).
2. D. McLean,Grain Boundaries in Metals, Clarendon Press, Oxford (1957).
3. D. V. Doane and J. S. Kirkaldy,Hardenability Concepts with Application to Steel, AIME, Warrendale, PA (1978).
4. S. K. Banerji and J. E. Morral,Proc. Int. Symp. Boron in Steels, TMS-AIME, Warrendale, PA (1979).
5. D. H. Werner,Boron and Boron Containing Steels, Stahleisen, Germany (1995).