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2. Thermodynamic Instability of the YBa2Cu3O7=x Phase at the 1:2:3 Composition;Garzon;J. Mater. Res.,1991
3. 3 F. H. Garzon and I. D. Raistrick , “Thermodynamic Measurements in the Y-Ba-Cu-O System”; p. 373 in Proceedings of the International Conference on the Chemistry of Electronic Ceramic Materials, Special Publication 804. National Institute for Science and Technology, Gaithersburg, MD, 1990.
4. 4 A. Navrotsky , “Thermochemistry of the Y2O3-BaO-CuO System”; see Ref. 3, p. 379.
5. Thermodynamic Considerations in Superconducting Oxides;Beyers;Annu. Rev. Mater. Sci.,1991