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\bibitem{Nikolaev+Michel2004} {\textquotedblleft}\textit{Ab initio approach to superexchange interactions in alkali doped fullerides AC$_{60}$}{\textquotedblright}. Nikolaev AV, Michel KH, AIP conference proceedings
T2 -- 18th International Winterschool/Euroconference on Electronic Properties, of Novel Materials, MAR 06-JUN 13, 2004, Kirchberg, AUSTRIA , 393 (2004).   http://doi.org/10.1063/1.1812115

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