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\bibitem{benAzzouz_etal2006} {\textquotedblleft}\textit{Structure, microstructure and transport properties of B-doped YBCO system}{\textquotedblright}. ben Azzouz F, Zouaoui M, Mani KD, Annabi M, Van Tendeloo G, ben Salem M, Physica: C : superconductivity \textbf{442}, 13 (2006).   http://doi.org/10.1016/j.physc.2006.03.135

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