1. Zhao Heng Xian, Chen Ruihui, and Wu Chanwei, “Inoculation of Alloys Al-23%Si and Al-26%Si with P and S,” Light Metals 1993 (Warrendale, PA: TMS, 1993), pp. 821–823.
2. Zhao Heng Xian et al., “Inoculation of Al-20%Si Alloy with P and RE,” Light Metals 1993 (Warrendale, PA: TMS, 1993), pp. 825–827.