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\bibitem{Brito_etal2014} {\textquotedblleft}\textit{A quantum Monte Carlo study on electron correlation in all-metal aromatic clusters MAl$_{4}$ -- (M = Li, Na, K, Rb, Cu, Ag and Au)}{\textquotedblright}. Brito BGA, Hai G-Q, Teixeira Rabelo JN, C{\^a}ndido L, Physical chemistry, chemical physics \textbf{16}, 8639 (2014).   http://doi.org/10.1039/c4cp00416g

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