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\bibitem{Kim_etal2007} {\textquotedblleft}\textit{Quantum mechanics of spin transfer in coupled electron-spin chains}{\textquotedblright}. Kim W, Covaci L, Dogan F, Marsiglio F, Epl \textbf{79}, 67004 (2007).   http://doi.org/10.1209/0295-5075/79/67004

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