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\bibitem{Foeldi_etal2008} {\textquotedblleft}\textit{Networks of quantum nanorings : programmable spintronic devices}{\textquotedblright}. F{\"o}ldi P, K{\'a}lm{\'a}n O, Benedict MG, Peeters FM, Nano letters \textbf{8}, 2556 (2008).   http://doi.org/10.1021/nl801858a

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