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\bibitem{Martin_etal1993} {\textquotedblleft}\textit{A mercury based superconducting cuprate, intergrowth of the 2201 and 1201 structures Tl$_{2}$HgBa$_{4}$Cu$_{2}$O$_{10+y}$}{\textquotedblright}. Martin C, Huv{\'e} M, Van Tendeloo G, Maignan A, Michel C, Hervieu M, Raveau B, Physica: C : superconductivity \textbf{212}, 274 (1993)

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