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\bibitem{Romaguera_etal2007} {\textquotedblleft}\textit{Effects of boundaries in mesoscopic superconductors}{\textquotedblright}. Romaguera AR de C, Doria MM, Peeters FM, Physica: C : superconductivity \textbf{460}, 1232 (2007).   http://doi.org/10.1016/j.physc.2007.04.178

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