1. Free Energy of Some Copper Compounds;Randall;Ind. Eng. Chem.,1931
2. The System Copper-Cupric Oxide-Oxygen;Roberts;J. Am. Chem. Soc.,1921
3. System Cupric Oxide, Cuprous Oxide, Oxygen;Smyth;ibid.,1920
4. Equilibrium Relationships in the System CuO-Cu2O-SiO2;Gadalla;Trans. Brit. Ceram. Soc.,1963