1. S.K. Ghosha, G. K. Dey, R.O. Dusane and A.K. Grover: Journal of Alloys and Compounds, Vol. 426 (2006), No. 1, p.235.
2. O.S. Es-Said, K. Zakharia and C. Ventura: Engineering Failure Analysis, Vol. 7 (2000), No. 5, p.323.
3. Hongbin Zhang, Lishuang Li: Special Steel Technology, 1996, No. 3, p.26 (In Chinese).
4. G. K. Dey, R. Tewari andP. Rao: Metallurgical and Materials Transactions A, Vol. 24 (1993), No. 12, p.2709.
5. G. Yang, J.Q. Fu and Z.H. Feng: Journal of Liaoning Institute of technology, Vol. 2 (2000), No. 3, p.40 (In Chinese).