1. Jing D, Liu Z, and Cai K, J Iron Steel Res 11 (1999) 9.
2. Tanaka S, Nuri Y, and Egashira T, Tetsu-to-Hagane 68 (1982) 159.
3. Nakai K, Sakashita T, and Hashio M, Tetsu-to-Hagane 73 (1987) 498.
4. Zhu Z, Zhang C, Cai D, Chen R, and Liu J, Iron Steel 42 (2007) 8.
5. Hisao K B, Takayuki S, Mizoguchi T, and Nariakira O R, Tetsu-to-Hagane 81 (1995) 31.