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\bibitem{Cakir_etal2014} {\textquotedblleft}\textit{Magnetoresistance in multilayer fullerene spin valves: A first-principles study}{\textquotedblright}. {\c C}akir D, Otalvaro DM, Brocks G, Physical review : B : condensed matter and materials physics \textbf{90}, 245404 (2014).   http://doi.org/10.1103/PhysRevB.90.245404

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