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\bibitem{Tikhomirov_etal2010} {\textquotedblleft}\textit{Preparation and luminescence of bulk oxyfluoride glasses doped with Ag nanoclusters}{\textquotedblright}. Tikhomirov VK, Rodriguez VD, Kutznetsov D, Kirilenko D, Van Tendeloo G, Moshchalkov VV, Optics express \textbf{18}, 22032 (2010).   http://doi.org/10.1364/OE.18.022032

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