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\bibitem{vandenBroek+Peeters2001} {\textquotedblleft}\textit{Confined states in two-dimensional flat elliptic quantum dots and elliptic quantum wires}{\textquotedblright}. van den Broek M, Peeters FM, Physica. E: Low-dimensional systems and nanostructures \textbf{11}, 345 (2001).   http://doi.org/10.1016/S1386-9477(01)00169-2

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