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\bibitem{Laffez_etal1996} {\textquotedblleft}\textit{Structural phase transition at low temperature, corresponding to charge ordering in the CMR perovskites LN$_{0.5}$A$_{0.5}$MNO$_{3}$}{\textquotedblright}. Laffez P, Van Tendeloo G, Millange F, Caignaert V, Hervieu M, Raveau B, Materials research bulletin \textbf{31}, 905 (1996).   http://doi.org/10.1016/S0025-5408(96)00090-6

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