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\bibitem{Zhang_etal2015} {\textquotedblleft}\textit{Tomasch effect in nanoscale superconductors}{\textquotedblright}. Zhang L-F, Covaci L, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{91}, 024508 (2015).   http://doi.org/10.1103/PhysRevB.91.024508

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