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Kimishima, Yoshihide; Hirabayashi, Shuichi; Miyata, Nahonori . (1988). Magnetic Property of YBa <sub/>2</sub> Cu <sub/>2</sub> CoO <sub/><i>y</i> </sub>. Japanese Journal of Applied Physics, 27(Part 2, No. 6), L1123–L1124. doi:10.1143/JJAP.27.L1123 
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