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\bibitem{Chen_etal2012} {\textquotedblleft}\textit{Superconducting transition temperature of Pb nanofilms : impact of thickness-dependent oscillations of the phonon-mediated electron-electron coupling}{\textquotedblright}. Chen Y, Shanenko AA, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{85}, 224517 (2012).   http://doi.org/10.1103/PhysRevB.85.224517

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