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\bibitem{Tong_etal2016} {\textquotedblleft}\textit{Highly Luminescent Cesium Lead Halide Perovskite Nanocrystals with Tunable Composition and Thickness by Ultrasonication}{\textquotedblright}. Tong Y, Bladt E, Ayg{\"u}ler MF, Manzi A, Milowska KZ, Hintermayr VA, Docampo P, Bals S, Urban AS, Polavarapu L, Feldmann J, Angewandte Chemie: international edition in English \textbf{55}, 13887 (2016).   http://doi.org/10.1002/anie.201605909

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