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\bibitem{Janssens_etal2005} {\textquotedblleft}\textit{Estimation of relative Fe2+ and Fe3+ contents of original manuscript fragments by means of μ-XANES and M{\"o}ssbauer spectrometry}{\textquotedblright}. Janssens K, Vekemans B, Rouchon-Quillet V  (2005).

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