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\bibitem{Lebedev_etal2002} {\textquotedblleft}\textit{Superconductivity and microstructure of YSr$_{2}$Cu$_{3}$O$_{6.875}$}{\textquotedblright}. Lebedev OI, Van Tendeloo G, Licci F, Gilioli E, Gauzzi A, Prodi A, Marezio M, Physical review : B : condensed matter and materials physics \textbf{66}, 132510 (2002).   http://doi.org/10.1103/PhysRevB.66.132510

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