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\bibitem{Szafran_etal2006} {\textquotedblleft}\textit{Magnetic-field-induced binding of few-electron systems in shallow quantum dots}{\textquotedblright}. Szafran B, Bednarek S, Peeters FM, Physical review : B : condensed matter and materials physics \textbf{74}, 115310 (2006).   http://doi.org/10.1103/PhysRevB.74.115310

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