1. For bibliographies, see the following
2. Phase Relationships in the System Zirconia-Ceria;Duwez;J. Am. Ceram. Soc,1950
3. Stabilization of Zirconia with Calcia and Magnesia;Duwez;ibid,1952
4. Zirconium Dioxide and Binary Systems with Zirconia as Component;Dietzel;Ber. deut. keram. Ges.,1953
5. Development of Zirconia Resistant to Thermal Shock;Curtis;J. Am. Ceram. Soc,1947