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\bibitem{Huve_etal1994} {\textquotedblleft}\textit{A mercury-based {\textquotedblleft}1201-0201{\textquotedblright} intergrowth HgBa$_{2}$La$_{2}$Cu$_{2}$O$_{8+x}$: a 53K superconductor}{\textquotedblright}. Huv{\'e} M, Martin C, Van Tendeloo G, Maignan A, Michel C, Hervieu M, Raveau B, Solid state communications \textbf{90}, 37 (1994)

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