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\bibitem{Casavola_etal2012} {\textquotedblleft}\textit{Anisotropic cation exchange in PbSe/CdSe core/shell nanocrystals of different geometry}{\textquotedblright}. Casavola M, van Huis MA, Bals S, Lambert K, Hens Z, Vanmaekelbergh D, Chemistry of materials \textbf{24}, 294 (2012).   http://doi.org/10.1021/cm202796s

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