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\bibitem{Martin_etal1993} {\textquotedblleft}\textit{The impact of quantum chemical methods on the interpretation of molecular spectra of carbon clusters (review article)}{\textquotedblright}. Martin JML, Fran{\c c}ois JP, Gijbels R, Journal of molecular structure \textbf{294}, 21 (1993).   http://doi.org/10.1016/0022-2860(93)80305-F

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