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\bibitem{Monot_etal1997} {\textquotedblleft}\textit{Microstructure and flux pinning properties of melt textured grown doped YBa$_{2}$Cu$_{3}$O$_{7-\delta}$}{\textquotedblright}. Monot I, Verbist K, Hervieu M, Laffez P, Delamare MP, Wang J, Desgardin G, Van Tendeloo G, Physica: C : superconductivity \textbf{274}, 253 (1997)

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