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\bibitem{Nikolaev+Michel1996} {\textquotedblleft}\textit{Microscopic theory of the rhombohedral phase and transition to the monoclinic phase of solid C$_{70}$}{\textquotedblright}. Nikolaev AV, Michel KH, Physical review : B : condensed matter and materials physics \textbf{54}, 12733 (1996).   http://doi.org/10.1103/PhysRevB.54.12733

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