1. 1) A. Parviainene and S. Fugleberg: Proceedings of Cobalt 80, CIM, Edmonton, Canada, (1980) 38–46.
2. 2) J. Dobrzanski and W. Kozminski: Proceedings of Copper 2003, Vol. IV, Santiago, Chile, (2003) 239–252.
3. 3) Y. Chang, J. Newmann, A. Mikula and D. Goldberg: INCRA Series on the Metallurgy of Copper - Phase Diagrams and Thermodynamic Properties of Ternary Copper - Metal Systems, (International Copper Research Association, Milwaukee, Wisconsin, USA, 1979) 367–386.
4. 4) Y. Lee and K. Itagaki: J. Min. Mater. Inst. Japan 102 (1986) 591–595.
5. 5) D. G. Mendoza, M. Hino and K. Itagaki: Mater. Trans. 43 (2002) 1166–1172.