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\bibitem{Rezvani_etal2018} {\textquotedblleft}\textit{Substrate-induced proximity effect in superconducting niobium nanofilms}{\textquotedblright}. Rezvani SJ, Perali A, Fretto M, De Leo N, Flammia L, Milo{\v s}evi{\'c} M, Nannarone S, Pinto N, Condensed Matter \textbf{4}, 4 (2018).   http://doi.org/10.3390/CONDMAT4010004

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