Synthesis and Characterization of High-Tc Superconducting Oxides by the
Modified Citrate Gel Process
R. S. Liu, W. N. Wang, C. T. Chang and P. T. Wu
Jpn. J. Appl. Phys. 28 (1989) pp. L2155-L2157 http://jjap.jsap.jp/link?JJAP/28/L2155
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