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\bibitem{Chaves_etal2009} {\textquotedblleft}\textit{Wave packet dynamics in semiconductor quantum rings of finite width}{\textquotedblright}. Chaves A, Farias GA, Peeters FM, Szafran B, Physical review : B : solid state \textbf{80}, 125331 (2009).   http://doi.org/10.1103/PhysRevB.80.125331

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