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\bibitem{Krekels_etal1992} {\textquotedblleft}\textit{Ortho II structure in ABa2Cu307-d compounds (A=Er, Nd, Pr, Sm, Yb), pp}{\textquotedblright}. Krekels T, Zou H, Van Tendeloo G, Wagner D, Buchgeister M, Hosseini SM, Herzog P, Physica: C : superconductivity \textbf{196}, 363 (1992)

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