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\bibitem{vanderStam_etal2017} {\textquotedblleft}\textit{Highly Emissive Divalent-Ion-Doped Colloidal CsPb$_{1{\textendash}\textit{x}}$M$_{\textit{x}}$Br$_{3}$Perovskite Nanocrystals through Cation Exchange}{\textquotedblright}. van der Stam W, Geuchies JJ, Altantzis T, van den Bos KHW, Meeldijk JD, Van Aert S, Bals S, Vanmaekelbergh D, de Mello Donega C, Journal of the American Chemical Society \textbf{139}, 4087 (2017).   http://doi.org/10.1021/jacs.6b13079

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