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\bibitem{Hamelet_etal2011} {\textquotedblleft}\textit{Existence of superstructures due to large amounts of Fe vacancies in the LiFePO$_{4}$-type framework}{\textquotedblright}. Hamelet S, Casas-Cabanas M, Dupont L, Davoisne C, Tarascon JM, Masquelier C, Chemistry of materials \textbf{23}, 32 (2011).   http://doi.org/10.1021/cm102511m

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